Emergent mystery in the Kondo insulator samarium hexaboride

Li, Lu; Sun, Kai; Kurdak, Cagliyan; Allen, J. W.

doi:10.1038/s42254-020-0210-8

Emergent mystery in the Kondo insulator samarium hexaboride

Journal Article · Wed Aug 05 00:00:00 EDT 2020 · Nature Reviews Physics

DOI:https://doi.org/10.1038/s42254-020-0210-8· OSTI ID:1649780

^[1]; ^[2]; Kurdak, Cagliyan ^[2]; Allen, J. W. ^[2]

Univ. of Michigan, Ann Arbor, MI (United States); University of Michigan
Univ. of Michigan, Ann Arbor, MI (United States)

Samarium hexaboride (SmB₆) is an example of a Kondo insulator, in which strong electron correlations cause a band gap to open. SmB₆ hosts both a bulk insulating state and a conductive surface state. Within a Fermi-liquid framework, the strongly correlated ground-state electronic structure can be mapped to a simple state resembling a topological insulator. Although uncertainties remain, many experiments provide compelling evidence that the conductive surface states have a topological origin. However, the bulk behavior is less well understood and some experiments indicate bulk in-gap states. This has inspired the development of many theories that predict the emergence of new bulk quantum phases beyond Landau’s Fermi-liquid model. We review the current progress on understanding both the surface and the bulk states, especially the experimental evidence for each. A mystery centres on the existence of the bulk in-gap states and why they appear in some experiments but not others. Adding to the mystery is why quantum oscillations in SmB6 appear only in magnetization but not in resistivity. Here, we conclude by elaborating on three questions: why SmB₆ is worth studying, what can be done to move forwards and what other correlated insulators could give additional insight.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0020184

OSTI ID:: 1649780

Journal Information:: Nature Reviews Physics, Journal Name: Nature Reviews Physics Journal Issue: 9 Vol. 2; ISSN 2522-5820

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

References (150)

Contrast Reversal in Scanning Tunneling Microscopy and Its Implications for the Topological Classification of SmB ₆ Herrmann, Hannes; Hlawenka, Peter; Siemensmeyer, Konrad Advanced Materials, Vol. 32, Issue 10 https://doi.org/10.1002/adma.201906725	journal	January 2020
Electrical properties of hexaborides of the alkaline- and rare-earth metals at low temperatures Paderno, Yu. B.; Novikov, V. I.; Garf, E. S. Soviet Powder Metallurgy and Metal Ceramics, Vol. 8, Issue 11 https://doi.org/10.1007/BF00778403	journal	November 1969
Investigation of High-Temperature Bulk Transport Characteristics and Skew Scattering in Samarium Hexaboride Rakoski, Alexa; Eo, Yun Suk; Kurdak, Çağlıyan Journal of Superconductivity and Novel Magnetism, Vol. 33, Issue 1 https://doi.org/10.1007/s10948-019-05281-8	journal	September 2019
The electrical resistivity of mixed valence materials due to impurities Riseborough, P. S. Solid State Communications, Vol. 38, Issue 1 https://doi.org/10.1016/0038-1098(81)91168-6	journal	April 1981
Growth of large single crystals of rare earth hexaborides Balakrishnan, G.; Lees, M. R.; Paul, D. McK. Journal of Crystal Growth, Vol. 256, Issue 1-2 https://doi.org/10.1016/S0022-0248(03)01296-X	journal	August 2003
Ultrahigh-resolution and angle-resolved photoemission study of SmB6 Nozawa, S.; Tsukamoto, T.; Kanai, K. Journal of Physics and Chemistry of Solids, Vol. 63, Issue 6-8 https://doi.org/10.1016/S0022-3697(02)00020-3	journal	June 2002
Two-component analysis of the 4f multiplet of samarium hexaboride Min, Chul-Hee; Sommer, O.; Kang, B. Y. Journal of Electron Spectroscopy and Related Phenomena, Vol. 199 https://doi.org/10.1016/j.elspec.2015.01.003	journal	February 2015
Comparative study of rare earth hexaborides using high resolution angle-resolved photoemission Ramankutty, S. V.; de Jong, N.; Huang, Y. K. Journal of Electron Spectroscopy and Related Phenomena, Vol. 208 https://doi.org/10.1016/j.elspec.2015.11.009	journal	April 2016
Electrical properties of SmB6 thin films prepared by pulsed laser deposition from a stoichiometric SmB6 target Batkova, Marianna; Batko, Ivan; Stobiecki, Feliks Journal of Alloys and Compounds, Vol. 744 https://doi.org/10.1016/j.jallcom.2018.02.101	journal	May 2018
Semi-Epitaxial SmB6 Thin Films Prepared by the Molecular Beam Epitaxy Shishido, Hiroaki; Yoneda, Yutaka; Yoshida, Takuya Physics Procedia, Vol. 75 https://doi.org/10.1016/j.phpro.2015.12.049	journal	January 2015
Surface electronic structure of SmB6(111) Ohtsubo, Yoshiyuki; Hagiwara, Kenta; Wang, Chengwei Physica B: Condensed Matter, Vol. 536 https://doi.org/10.1016/j.physb.2017.09.033	journal	May 2018
Quantum phase transition and destruction of Kondo effect in pressurized SmB6 Zhou, Yazhou; Wu, Qi; Rosa, Priscila F. S. Science Bulletin, Vol. 62, Issue 21 https://doi.org/10.1016/j.scib.2017.10.008	journal	November 2017
High Field Gap Closure in the Kondo Insulator SmB6 Cooley, J. C.; Mielke, C. H.; Hults, W. L. Journal of Superconductivity, Vol. 12, Issue 1, p. 171-173 https://doi.org/10.1023/A:1007771030747	journal	February 1999
Topological quantum chemistry Bradlyn, Barry; Elcoro, L.; Cano, Jennifer Nature, Vol. 547, Issue 7663 https://doi.org/10.1038/nature23268	journal	July 2017
Surface Kondo effect and non-trivial metallic state of the Kondo insulator YbB12 Hagiwara, Kenta; Ohtsubo, Yoshiyuki; Matsunami, Masaharu Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms12690	journal	August 2016
Spin injection and inverse Edelstein effect in the surface states of topological Kondo insulator SmB6 Song, Qi; Mi, Jian; Zhao, Dan Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms13485	journal	November 2016
Additional energy scale in SmB6 at low-temperature Jiao, L.; Rößler, S.; Kim, D. J. Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms13762	journal	December 2016
Surface electronic structure of the topological Kondo-insulator candidate correlated electron system SmB6 Neupane, M.; Alidoust, N.; Xu, S-Y. Nature Communications, Vol. 4, Issue 1 https://doi.org/10.1038/ncomms3991	journal	December 2013
Observation of possible topological in-gap surface states in the Kondo insulator SmB6 by photoemission Jiang, J.; Li, S.; Zhang, T. Nature Communications, Vol. 4, Issue 1 https://doi.org/10.1038/ncomms4010	journal	December 2013
Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator Xu, N.; Biswas, P. K.; Dil, J. H. Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms5566	journal	July 2014
Topological surface state in the Kondo insulator samarium hexaboride Kim, D. J.; Xia, J.; Fisk, Z. Nature Materials, Vol. 13, Issue 5 https://doi.org/10.1038/nmat3913	journal	March 2014
One-dimensional edge state transport in a topological Kondo insulator Nakajima, Yasuyuki; Syers, Paul; Wang, Xiangfeng Nature Physics, Vol. 12, Issue 3 https://doi.org/10.1038/nphys3555	journal	November 2015
Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6 Hartstein, M.; Toews, W. H.; Hsu, Y. -T. Nature Physics, Vol. 14, Issue 2 https://doi.org/10.1038/nphys4295	journal	October 2017
Symmetry-based indicators of band topology in the 230 space groups Po, Hoi Chun; Vishwanath, Ashvin; Watanabe, Haruki Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/s41467-017-00133-2	journal	June 2017
Samarium hexaboride is a trivial surface conductor Hlawenka, P.; Siemensmeyer, K.; Weschke, E. Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-02908-7	journal	February 2018
Screened moments and extrinsic in-gap states in samarium hexaboride Fuhrman, W. T.; Chamorro, J. R.; Alekseev, P. A. Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-04007-z	journal	April 2018
Mixed-valence insulators with neutral Fermi surfaces Chowdhury, Debanjan; Sodemann, Inti; Senthil, T. Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-04163-2	journal	May 2018
Quantitative mappings between symmetry and topology in solids Song, Zhida; Zhang, Tiantian; Fang, Zhong Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-06010-w	journal	August 2018
Non-trivial surface states of samarium hexaboride at the (111) surface Ohtsubo, Yoshiyuki; Yamashita, Yuki; Hagiwara, Kenta Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-10353-3	journal	May 2019
Unconventional thermal metallic state of charge-neutral fermions in an insulator Sato, Y.; Xiang, Z.; Kasahara, Y. Nature Physics, Vol. 15, Issue 9 https://doi.org/10.1038/s41567-019-0552-2	journal	July 2019
Imaging emergent heavy Dirac fermions of a topological Kondo insulator Pirie, Harris; Liu, Yu; Soumyanarayanan, Anjan Nature Physics, Vol. 16, Issue 1 https://doi.org/10.1038/s41567-019-0700-8	journal	November 2019
Comprehensive search for topological materials using symmetry indicators Tang, Feng; Po, Hoi Chun; Vishwanath, Ashvin Nature, Vol. 566, Issue 7745 https://doi.org/10.1038/s41586-019-0937-5	journal	February 2019
Catalogue of topological electronic materials Zhang, Tiantian; Jiang, Yi; Song, Zhida Nature, Vol. 566, Issue 7745 https://doi.org/10.1038/s41586-019-0944-6	journal	February 2019
A complete catalogue of high-quality topological materials Vergniory, M. G.; Elcoro, L.; Felser, Claudia Nature, Vol. 566, Issue 7745 https://doi.org/10.1038/s41586-019-0954-4	journal	February 2019
Perfect Andreev reflection due to the Klein paradox in a topological superconducting state Lee, Seunghun; Stanev, Valentin; Zhang, Xiaohang Nature, Vol. 570, Issue 7761 https://doi.org/10.1038/s41586-019-1305-1	journal	June 2019
Matching DMFT calculations with photoemission spectra of heavy fermion insulators: universal properties of the near-gap spectra of SmB6 Min, Chul-Hee; Goth, F.; Lutz, P. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-12080-5	journal	September 2017
Evidence for in-gap surface states on the single phase SmB6(001) surface Miyamachi, Toshio; Suga, Shigemasa; Ellguth, Martin Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-12887-2	journal	October 2017
Surface Hall Effect and Nonlocal Transport in SmB6: Evidence for Surface Conduction Kim, D. J.; Thomas, S.; Grant, T. Scientific Reports, Vol. 3, Issue 1 https://doi.org/10.1038/srep03150	journal	November 2013
Emergent photovoltage on SmB6 surface upon bulk-gap evolution revealed by pump-and-probe photoemission spectroscopy Ishida, Y.; Otsu, T.; Shimada, T. Scientific Reports, Vol. 5, Issue 1 https://doi.org/10.1038/srep08160	journal	February 2015
Racah materials: role of atomic multiplets in intermediate valence systems Shick, A. B.; Havela, L.; Lichtenstein, A. I. Scientific Reports, Vol. 5, Issue 1 https://doi.org/10.1038/srep15429	journal	October 2015
Theory of mixed valence: Metals or small gap insulators (invited) Martin, Richard M.; Allen, J. W. Journal of Applied Physics, Vol. 50, Issue B11 https://doi.org/10.1063/1.326765	journal	January 1979
Robust topological surface state in Kondo insulator SmB ₆ thin films Yong, Jie; Jiang, Yeping; Usanmaz, Demet Applied Physics Letters, Vol. 105, Issue 22 https://doi.org/10.1063/1.4902865	journal	December 2014
Magnetotransport in nanocrystalline SmB ₆ thin films Yong, Jie; Jiang, Yeping; Zhang, Xiaohang AIP Advances, Vol. 5, Issue 7 https://doi.org/10.1063/1.4927398	journal	July 2015
Hybridization gap and Fano resonance in SmB ₆ Rößler, Sahana; Jang, Tae-Hwan; Kim, Dae-Jeong Proceedings of the National Academy of Sciences, Vol. 111, Issue 13 https://doi.org/10.1073/pnas.1402643111	journal	March 2014
Topological surface states interacting with bulk excitations in the Kondo insulator SmB ₆ revealed via planar tunneling spectroscopy Park, Wan Kyu; Sun, Lunan; Noddings, Alexander Proceedings of the National Academy of Sciences, Vol. 113, Issue 24 https://doi.org/10.1073/pnas.1606042113	journal	May 2016
Weyl–Kondo semimetal in heavy-fermion systems Lai, Hsin-Hua; Grefe, Sarah E.; Paschen, Silke Proceedings of the National Academy of Sciences, Vol. 115, Issue 1 https://doi.org/10.1073/pnas.1715851115	journal	December 2017
Evidence for a conducting surface ground state in high-quality single crystalline FeSi Fang, Yuankan; Ran, Sheng; Xie, Weiwei Proceedings of the National Academy of Sciences, Vol. 115, Issue 34 https://doi.org/10.1073/pnas.1806910115	journal	August 2018
Transport gap in SmB ₆ protected against disorder Eo, Yun Suk; Rakoski, Alexa; Lucien, Juniar Proceedings of the National Academy of Sciences, Vol. 116, Issue 26 https://doi.org/10.1073/pnas.1901245116	journal	June 2019
Metallic surface states in a correlated d-electron topological Kondo insulator candidate FeSb ₂ Xu, Ke-Jun; Chen, Su-Di; He, Yu Proceedings of the National Academy of Sciences, Vol. 117, Issue 27 https://doi.org/10.1073/pnas.2002361117	journal	June 2020
Angle-resolved measurements of the photoemission of electrons in the study of solids Himpsel, F. J. Advances in Physics, Vol. 32, Issue 1 https://doi.org/10.1080/00018738300101521	journal	January 1983
Growth of single crystals from metallic fluxes Canfield, P. C.; Fisk, Z. Philosophical Magazine B, Vol. 65, Issue 6 https://doi.org/10.1080/13642819208215073	journal	June 1992
Surface and electronic structure of SmB through scanning tunneling microscopy Rößler, S.; Jiao, Lin; Kim, D. J. Philosophical Magazine, Vol. 96, Issue 31 https://doi.org/10.1080/14786435.2016.1171414	journal	April 2016
Momentum microscopy of single crystals with detailed surface characterisation Ellguth, M.; Tusche, C.; Iga, F. Philosophical Magazine, Vol. 96, Issue 31 https://doi.org/10.1080/14786435.2016.1185185	journal	May 2016
Valence characterisation of the subsurface region in Lutz, P.; Thees, M.; Peixoto, T. R. F. Philosophical Magazine, Vol. 96, Issue 31 https://doi.org/10.1080/14786435.2016.1192724	journal	May 2016
Foreward for special issue of philosophical magazine on: topological correlated insulators and SmB ₆ Allen, J. W. Philosophical Magazine, Vol. 96, Issue 31 https://doi.org/10.1080/14786435.2016.1247995	journal	May 2016
Rare-earth compounds with mixed valencies Mott, N. F. Philosophical Magazine, Vol. 30, Issue 2 https://doi.org/10.1080/14786439808206566	journal	August 1974
Theory of the phase diagram in the p-T plane of SmS Kaplan, T. A.; Mahanti, S. D. Journal of Physics C: Solid State Physics, Vol. 12, Issue 1 https://doi.org/10.1088/0022-3719/12/1/006	journal	January 1979
The low lying states of intermediate-valence SmS Stevens, K. W. H. Journal of Physics C: Solid State Physics, Vol. 13, Issue 22 https://doi.org/10.1088/0022-3719/13/22/003	journal	August 1980
The Luttinger theorem and intermediate valence Geldenhuys, J.; Roberts, M.; Stevens, K. W. H. Journal of Physics C: Solid State Physics, Vol. 15, Issue 2 https://doi.org/10.1088/0022-3719/15/2/007	journal	January 1982
A New Approach to the Theory of Photoemission from Solids Bardyszewski, W.; Hedin, L. Physica Scripta, Vol. 32, Issue 4 https://doi.org/10.1088/0031-8949/32/4/033	journal	October 1985
Spin and angle resolved photoemission on non-magnetic low-dimensional systems Dil, J. Hugo Journal of Physics: Condensed Matter, Vol. 21, Issue 40 https://doi.org/10.1088/0953-8984/21/40/403001	journal	September 2009
Spin–orbit-induced photoelectron spin polarization in angle-resolved photoemission from both atomic and condensed matter targets Heinzmann, Ulrich; Dil, J. Hugo Journal of Physics: Condensed Matter, Vol. 24, Issue 17 https://doi.org/10.1088/0953-8984/24/17/173001	journal	April 2012
Spin- and angle-resolved photoemission on the topological Kondo insulator candidate: SmB ₆ Xu, Nan; Ding, Hong; Shi, Ming Journal of Physics: Condensed Matter, Vol. 28, Issue 36 https://doi.org/10.1088/0953-8984/28/36/363001	journal	July 2016
Magnetic excitations in intermediate-valence semiconductors with a singlet ground state Kikoin, K. A.; Mishchenko, A. S. Journal of Physics: Condensed Matter, Vol. 7, Issue 2 https://doi.org/10.1088/0953-8984/7/2/008	journal	January 1995
Theory of Superconductivity Bardeen, J.; Cooper, L. N.; Schrieffer, J. R. Physical Review, Vol. 108, Issue 5 https://doi.org/10.1103/PhysRev.108.1175	journal	December 1957
Effect of Magnetic Impurities on the Density of States of Superconductors Woolf, Michael A.; Reif, F. Physical Review, Vol. 137, Issue 2A https://doi.org/10.1103/PhysRev.137.A557	journal	January 1965
Inverted Resistance Measurements as a Method for Characterizing the Bulk and Surface Conductivities of Three-Dimensional Topological Insulators Eo, Y. S.; Sun, K.; Kurdak, Ç. Physical Review Applied, Vol. 9, Issue 4 https://doi.org/10.1103/PhysRevApplied.9.044006	journal	April 2018
Anomalously large spin-current voltages on the surface of SmB 6 Geurs, Johannes; Ryu, Gihun; Lin, Chengtian Physical Review B, Vol. 100, Issue 3 https://doi.org/10.1103/PhysRevB.100.035435	journal	July 2019
Topological nonmagnetic impurity states in topological Kondo insulators Abele, M.; Yuan, X.; Riseborough, P. S. Physical Review B, Vol. 101, Issue 9 https://doi.org/10.1103/PhysRevB.101.094101	journal	March 2020
Comprehensive surface magnetotransport study of SmB 6 Eo, Y. S.; Wolgast, S.; Rakoski, A. Physical Review B, Vol. 101, Issue 15 https://doi.org/10.1103/PhysRevB.101.155109	journal	April 2020
Large low-temperature Hall effect and resistivity in mixed-valent Sm B 6 Allen, J. W.; Batlogg, B.; Wachter, P. Physical Review B, Vol. 20, Issue 12 https://doi.org/10.1103/PhysRevB.20.4807	journal	December 1979
Intermediate-valent Sm B 6 and the hybridization model: An optical study Travaglini, G.; Wachter, P. Physical Review B, Vol. 29, Issue 2 https://doi.org/10.1103/PhysRevB.29.893	journal	January 1984
Physical Properties of Sm B 6 Nickerson, J. C.; White, R. M.; Lee, K. N. Physical Review B, Vol. 3, Issue 6 https://doi.org/10.1103/PhysRevB.3.2030	journal	March 1971
Photoemission linewidths and quasiparticle lifetimes Smith, N. V.; Thiry, P.; Petroff, Y. Physical Review B, Vol. 47, Issue 23 https://doi.org/10.1103/PhysRevB.47.15476	journal	June 1993
Low-energy electrodynamics of SmB 6 Gorshunov, B.; Sluchanko, N.; Volkov, A. Physical Review B, Vol. 59, Issue 3 https://doi.org/10.1103/PhysRevB.59.1808	journal	January 1999
4Electron self-trapping in intermediate-valent SmB 6 Curnoe, S.; Kikoin, K. A. Physical Review B, Vol. 61, Issue 23 https://doi.org/10.1103/PhysRevB.61.15714	journal	June 2000
Energy gap of intermediate-valent SmB 6 studied by point-contact spectroscopy Flachbart, K.; Gloos, K.; Konovalova, E. Physical Review B, Vol. 64, Issue 8 https://doi.org/10.1103/PhysRevB.64.085104	journal	August 2001
Kondo insulator description of spin state transition in FeSb2 Petrovic, C.; Lee, Y.; Vogt, T. Physical Review B, Vol. 72, Issue 4 https://doi.org/10.1103/PhysRevB.72.045103	journal	July 2005
Topological insulators with inversion symmetry Fu, Liang; Kane, C. L. Physical Review B, Vol. 76, Issue 4 https://doi.org/10.1103/PhysRevB.76.045302	journal	July 2007
Multiplet effects in the electronic structure of intermediate-valence compounds Thunström, P.; Di Marco, I.; Grechnev, A. Physical Review B, Vol. 79, Issue 16 https://doi.org/10.1103/PhysRevB.79.165104	journal	April 2009
Weak localization of bulk channels in topological insulator thin films Lu, Hai-Zhou; Shen, Shun-Qing Physical Review B, Vol. 84, Issue 12 https://doi.org/10.1103/PhysRevB.84.125138	journal	September 2011
Momentum-dependent hybridization gap and dispersive in-gap state of the Kondo semiconductor SmB 6 Miyazaki, Hidetoshi; Hajiri, Tetsuya; Ito, Takahiro Physical Review B, Vol. 86, Issue 7 https://doi.org/10.1103/PhysRevB.86.075105	journal	August 2012
Bulk topological invariants in noninteracting point group symmetric insulators Fang, Chen; Gilbert, Matthew J.; Bernevig, B. Andrei Physical Review B, Vol. 86, Issue 11 https://doi.org/10.1103/PhysRevB.86.115112	journal	September 2012
Surface and bulk electronic structure of the strongly correlated system SmB 6 and implications for a topological Kondo insulator Xu, N.; Shi, X.; Biswas, P. K. Physical Review B, Vol. 88, Issue 12 https://doi.org/10.1103/PhysRevB.88.121102	journal	September 2013
Low-temperature surface conduction in the Kondo insulator SmB 6 Wolgast, Steven; Kurdak, Çağlıyan; Sun, Kai Physical Review B, Vol. 88, Issue 18 https://doi.org/10.1103/PhysRevB.88.180405	journal	November 2013
Dynamically generated edge states in topological Kondo insulators Werner, Jan; Assaad, Fakher F. Physical Review B, Vol. 89, Issue 24 https://doi.org/10.1103/PhysRevB.89.245119	journal	June 2014
Termination-dependent surface in-gap states in a potential mixed-valent topological insulator: SmB 6 Kim, Junwon; Kim, Kyoo; Kang, Chang-Jong Physical Review B, Vol. 90, Issue 7 https://doi.org/10.1103/PhysRevB.90.075131	journal	August 2014
Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB 6 revealed by high-resolution ARPES Xu, N.; Matt, C. E.; Pomjakushina, E. Physical Review B, Vol. 90, Issue 8 https://doi.org/10.1103/PhysRevB.90.085148	journal	August 2014
NMR relaxation in the topological Kondo insulator SmB 6 Schlottmann, P. Physical Review B, Vol. 90, Issue 16 https://doi.org/10.1103/PhysRevB.90.165127	journal	October 2014
Surface properties of SmB 6 from x-ray photoelectron spectroscopy Heming, N.; Treske, U.; Knupfer, M. Physical Review B, Vol. 90, Issue 19 https://doi.org/10.1103/PhysRevB.90.195128	journal	November 2014
Surface state reconstruction in ion-damaged SmB 6 Wakeham, N.; Wang, Y. Q.; Fisk, Z. Physical Review B, Vol. 91, Issue 8 https://doi.org/10.1103/PhysRevB.91.085107	journal	February 2015
Magnetoresistance evidence of a surface state and a field-dependent insulating state in the Kondo insulator SmB 6 Chen, F.; Shang, C.; Jin, Z. Physical Review B, Vol. 91, Issue 20 https://doi.org/10.1103/PhysRevB.91.205133	journal	May 2015
Magnetotransport measurements of the surface states of samarium hexaboride using Corbino structures Wolgast, S.; Eo, Y. S.; Öztürk, T. Physical Review B, Vol. 92, Issue 11 https://doi.org/10.1103/PhysRevB.92.115110	journal	September 2015
Nonuniversal weak antilocalization effect in cubic topological Kondo insulators Dzero, Maxim; Vavilov, Maxim G.; Kechedzhi, Kostyantyn Physical Review B, Vol. 92, Issue 16 https://doi.org/10.1103/PhysRevB.92.165415	journal	October 2015
Spin textures on general surfaces of the correlated topological insulator SmB 6 Baruselli, Pier Paolo; Vojta, Matthias Physical Review B, Vol. 93, Issue 19 https://doi.org/10.1103/PhysRevB.93.195117	journal	May 2016
Coexistence of light and heavy surface states in a topological multiband Kondo insulator Peters, Robert; Yoshida, Tsuneya; Sakakibara, Hirofumi Physical Review B, Vol. 93, Issue 23 https://doi.org/10.1103/PhysRevB.93.235159	journal	June 2016
Breakdown of the Kondo insulating state in SmB 6 by introducing Sm vacancies Valentine, Michael E.; Koohpayeh, Seyed; Phelan, W. Adam Physical Review B, Vol. 94, Issue 7 https://doi.org/10.1103/PhysRevB.94.075102	journal	August 2016
Magnetic and nonmagnetic doping dependence of the conducting surface states in Sm B 6 Kang, B. Y.; Min, Chul-Hee; Lee, S. S. Physical Review B, Vol. 94, Issue 16 https://doi.org/10.1103/PhysRevB.94.165102	journal	October 2016
Anomalous three-dimensional bulk ac conduction within the Kondo gap of SmB 6 single crystals Laurita, N. J.; Morris, C. M.; Koohpayeh, S. M. Physical Review B, Vol. 94, Issue 16 https://doi.org/10.1103/PhysRevB.94.165154	journal	October 2016
Weak antilocalization and linear magnetoresistance in the surface state of SmB 6 Thomas, S.; Kim, D. J.; Chung, S. B. Physical Review B, Vol. 94, Issue 20 https://doi.org/10.1103/PhysRevB.94.205114	journal	November 2016
Effects of spin excitons on the surface states of SmB 6 : A photoemission study Arab, Arian; Gray, A. X.; Nemšák, S. Physical Review B, Vol. 94, Issue 23 https://doi.org/10.1103/PhysRevB.94.235125	journal	December 2016
Signature of surface state coupling in thin films of the topological Kondo insulator SmB 6 from anisotropic magnetoresistance Shaviv Petrushevsky, M.; Rout, P. K.; Levi, G. Physical Review B, Vol. 95, Issue 8 https://doi.org/10.1103/PhysRevB.95.085112	journal	February 2017
Irreversible proliferation of magnetic moments at cleaved surfaces of the topological Kondo insulator SmB 6 He, Haowei; Miao, Lin; Augustin, Edwin Physical Review B, Vol. 95, Issue 19 https://doi.org/10.1103/PhysRevB.95.195126	journal	May 2017
Understanding low-temperature bulk transport in samarium hexaboride without relying on in-gap bulk states Rakoski, A.; Eo, Y. S.; Sun, K. Physical Review B, Vol. 95, Issue 19 https://doi.org/10.1103/PhysRevB.95.195133	journal	May 2017
Reduction of the low-temperature bulk gap in samarium hexaboride under high magnetic fields Wolgast, S.; Eo, Y. S.; Sun, K. Physical Review B, Vol. 95, Issue 24 https://doi.org/10.1103/PhysRevB.95.245112	journal	June 2017
Bulk and surface electronic properties of SmB 6 : A hard x-ray photoelectron spectroscopy study Utsumi, Y.; Kasinathan, D.; Ko, K. -T. Physical Review B, Vol. 96, Issue 15 https://doi.org/10.1103/PhysRevB.96.155130	journal	October 2017
Quantum oscillations in insulators with neutral Fermi surfaces Sodemann, Inti; Chowdhury, Debanjan; Senthil, T. Physical Review B, Vol. 97, Issue 4 https://doi.org/10.1103/PhysRevB.97.045152	journal	January 2018
Parity-violating hybridization in heavy Weyl semimetals Chang, Po-Yao; Coleman, Piers Physical Review B, Vol. 97, Issue 15 https://doi.org/10.1103/PhysRevB.97.155134	journal	April 2018
Chemical and valence reconstruction at the surface of SmB 6 revealed by means of resonant soft x-ray reflectometry Zabolotnyy, V. B.; Fürsich, K.; Green, R. J. Physical Review B, Vol. 97, Issue 20 https://doi.org/10.1103/PhysRevB.97.205416	journal	May 2018
Observation of a well-defined hybridization gap and in-gap states on the SmB 6 (001) surface Sun, Zhixiang; Maldonado, Ana; Paz, Wendel S. Physical Review B, Vol. 97, Issue 23 https://doi.org/10.1103/PhysRevB.97.235107	journal	June 2018
Field-dependent heat transport in the Kondo insulator SmB 6 : Phonons scattered by magnetic impurities Boulanger, M-E.; Laliberté, F.; Dion, M. Physical Review B, Vol. 97, Issue 24 https://doi.org/10.1103/PhysRevB.97.245141	journal	June 2018
Physical properties of Sm x B 6 single crystals Stankiewicz, Jolanta; Evangelisti, Marco; Rosa, Priscila F. S. Physical Review B, Vol. 99, Issue 4 https://doi.org/10.1103/PhysRevB.99.045138	journal	January 2019
Electrical detection of the surface spin polarization of the candidate topological Kondo insulator Sm B 6 Kim, Jehyun; Jang, Chaun; Wang, Xiangfeng Physical Review B, Vol. 99, Issue 24 https://doi.org/10.1103/PhysRevB.99.245148	journal	June 2019
Topological Kondo Insulators Dzero, Maxim; Sun, Kai; Galitski, Victor Physical Review Letters, Vol. 104, Issue 10 https://doi.org/10.1103/PhysRevLett.104.106408	journal	March 2010
Correlated Topological Insulators with Mixed Valence Lu, Feng; Zhao, JianZhou; Weng, Hongming Physical Review Letters, Vol. 110, Issue 9 https://doi.org/10.1103/PhysRevLett.110.096401	journal	February 2013
Polarity-Driven Surface Metallicity in SmB 6 Zhu, Z. -H.; Nicolaou, A.; Levy, G. Physical Review Letters, Vol. 111, Issue 21 https://doi.org/10.1103/PhysRevLett.111.216402	journal	November 2013
Emergence of a Coherent In-Gap State in the SmB 6 Kondo Insulator Revealed by Scanning Tunneling Spectroscopy Ruan, Wei; Ye, Cun; Guo, Minghua Physical Review Letters, Vol. 112, Issue 13 https://doi.org/10.1103/PhysRevLett.112.136401	journal	March 2014
Importance of Charge Fluctuations for the Topological Phase in SmB 6 Min, Chul-Hee; Lutz, P.; Fiedler, S. Physical Review Letters, Vol. 112, Issue 22 https://doi.org/10.1103/PhysRevLett.112.226402	journal	June 2014
Non-Kondo-like Electronic Structure in the Correlated Rare-Earth Hexaboride Y b B 6 Neupane, Madhab; Xu, Su-Yang; Alidoust, Nasser Physical Review Letters, Vol. 114, Issue 1 https://doi.org/10.1103/PhysRevLett.114.016403	journal	January 2015
Interaction Driven Subgap Spin Exciton in the Kondo Insulator SmB 6 Fuhrman, W. T.; Leiner, J.; Nikolić, P. Physical Review Letters, Vol. 114, Issue 3 https://doi.org/10.1103/PhysRevLett.114.036401	journal	January 2015
Tuning Bulk and Surface Conduction in the Proposed Topological Kondo Insulator SmB 6 Syers, Paul; Kim, Dohun; Fuhrer, Michael S. Physical Review Letters, Vol. 114, Issue 9 https://doi.org/10.1103/PhysRevLett.114.096601	journal	March 2015
Kondo Breakdown in Topological Kondo Insulators Alexandrov, Victor; Coleman, Piers; Erten, Onur Physical Review Letters, Vol. 114, Issue 17 https://doi.org/10.1103/PhysRevLett.114.177202	journal	April 2015
Quantum Oscillations without a Fermi Surface and the Anomalous de Haas–van Alphen Effect Knolle, Johannes; Cooper, Nigel R. Physical Review Letters, Vol. 115, Issue 14 https://doi.org/10.1103/PhysRevLett.115.146401	journal	September 2015
Distinct Topological Crystalline Phases in Models for the Strongly Correlated Topological Insulator SmB 6 Baruselli, Pier Paolo; Vojta, Matthias Physical Review Letters, Vol. 115, Issue 15 https://doi.org/10.1103/PhysRevLett.115.156404	journal	October 2015
Surface-State Spin Textures and Mirror Chern Numbers in Topological Kondo Insulators Legner, Markus; Rüegg, Andreas; Sigrist, Manfred Physical Review Letters, Vol. 115, Issue 15 https://doi.org/10.1103/PhysRevLett.115.156405	journal	October 2015
Electronic Structure of YbB 6 : Is it a Topological Insulator or Not? Kang, Chang-Jong; Denlinger, J. D.; Allen, J. W. Physical Review Letters, Vol. 116, Issue 11 https://doi.org/10.1103/PhysRevLett.116.116401	journal	March 2016
Bulk Fermi Surface of Charge-Neutral Excitations in SmB 6 or Not: A Heat-Transport Study Xu, Y.; Cui, S.; Dong, J. K. Physical Review Letters, Vol. 116, Issue 24 https://doi.org/10.1103/PhysRevLett.116.246403	journal	June 2016
Excitons in topological Kondo insulators: Theory of thermodynamic and transport anomalies in SmB 6 Knolle, Johannes; Cooper, Nigel R. Physical Review Letters, Vol. 118, Issue 9 https://doi.org/10.1103/PhysRevLett.118.096604	journal	March 2017
Skyrme Insulators: Insulators at the Brink of Superconductivity Erten, Onur; Chang, Po-Yao; Coleman, Piers Physical Review Letters, Vol. 119, Issue 5 https://doi.org/10.1103/PhysRevLett.119.057603	journal	August 2017
Nontrivial Nature and Penetration Depth of Topological Surface States in SmB 6 Thin Films Liu, Tao; Li, Yufan; Gu, Lei Physical Review Letters, Vol. 120, Issue 20 https://doi.org/10.1103/PhysRevLett.120.207206	journal	May 2018
Quantum Oscillation from In-Gap States and a Non-Hermitian Landau Level Problem Shen, Huitao; Fu, Liang Physical Review Letters, Vol. 121, Issue 2 https://doi.org/10.1103/PhysRevLett.121.026403	journal	July 2018
Highly Asymmetric Nodal Semimetal in Bulk SmB 6 Harrison, N. Physical Review Letters, Vol. 121, Issue 2 https://doi.org/10.1103/PhysRevLett.121.026602	journal	July 2018
Quantum Oscillations in Flux-Grown SmB 6 with Embedded Aluminum Thomas, S. M.; Ding, Xiaxin; Ronning, F. Physical Review Letters, Vol. 122, Issue 16 https://doi.org/10.1103/PhysRevLett.122.166401	journal	April 2019
Magnetic and Semiconducting Properties of Sm B 6 Menth, A.; Buehler, E.; Geballe, T. H. Physical Review Letters, Vol. 22, Issue 7 https://doi.org/10.1103/PhysRevLett.22.295	journal	February 1969
Electronic and Magnetic Structure of Sm B 6 Cohen, R. L.; Eibschütz, M.; West, K. W. Physical Review Letters, Vol. 24, Issue 8 https://doi.org/10.1103/PhysRevLett.24.383	journal	February 1970
Fermi-Surfae Sum Rule and its Consequences for Periodic Kondo and Mixed-Valence Systems Martin, Richard M. Physical Review Letters, Vol. 48, Issue 5 https://doi.org/10.1103/PhysRevLett.48.362	journal	February 1982
Theory for the anomalous Hall constant of mixed-valence systems Coleman, P.; Anderson, P. W.; Ramakrishnan, T. V. Physical Review Letters, Vol. 55, Issue 4 https://doi.org/10.1103/PhysRevLett.55.414	journal	July 1985
Sm B 6 : Kondo Insulator or Exotic Metal? Cooley, J. C.; Aronson, M. C.; Fisk, Z. Physical Review Letters, Vol. 74, Issue 9 https://doi.org/10.1103/PhysRevLett.74.1629	journal	February 1995
Properties of the donor impurity band in mixed valence insulators Skinner, Brian Physical Review Materials, Vol. 3, Issue 10 https://doi.org/10.1103/PhysRevMaterials.3.104601	journal	October 2019
Mixed-valence compounds Varma, C. M. Reviews of Modern Physics, Vol. 48, Issue 2 https://doi.org/10.1103/RevModPhys.48.219	journal	April 1976
Colloquium: Topological insulators Hasan, M. Z.; Kane, C. L. Reviews of Modern Physics, Vol. 82, Issue 4, p. 3045-3067 https://doi.org/10.1103/RevModPhys.82.3045	journal	November 2010
Topological insulators and superconductors Qi, Xiao-Liang; Zhang, Shou-Cheng Reviews of Modern Physics, Vol. 83, Issue 4 https://doi.org/10.1103/RevModPhys.83.1057	journal	October 2011
Magnetic and defect probes of the SmB ₆ surface state Jiao, Lin; Rößler, Sahana; Kasinathan, Deepa Science Advances, Vol. 4, Issue 11 https://doi.org/10.1126/sciadv.aau4886	journal	November 2018
Two-dimensional Fermi surfaces in Kondo insulator SmB ₆ Li, G.; Xiang, Z.; Yu, F. Science, Vol. 346, Issue 6214 https://doi.org/10.1126/science.1250366	journal	December 2014
Unconventional Fermi surface in an insulating state Tan, B. S.; Hsu, Y. - T.; Zeng, B. Science, Vol. 349, Issue 6245 https://doi.org/10.1126/science.aaa7974	journal	July 2015
Quantum oscillations of electrical resistivity in an insulator Xiang, Z.; Kasahara, Y.; Asaba, T. Science, Vol. 362, Issue 6410 https://doi.org/10.1126/science.aap9607	journal	August 2018
de Haas-van Alphen Effect and Fermi Surface of LaB ₆ Ishizawa, Yoshio; Tanaka, Takaho; Bannai, Eisuke Journal of the Physical Society of Japan, Vol. 42, Issue 1 https://doi.org/10.1143/JPSJ.42.112	journal	January 1977
Topological Kondo Insulators Dzero, Maxim; Xia, Jing; Galitski, Victor Annual Review of Condensed Matter Physics, Vol. 7, Issue 1 https://doi.org/10.1146/annurev-conmatphys-031214-014749	journal	March 2016
Spin-Polarized Angle-Resolved Photoelectron Spectroscopy of the So-Predicted Kondo Topological Insulator SmB ₆ Suga, Shigemasa; Sakamoto, Kazuyuki; Okuda, Taichi Journal of the Physical Society of Japan, Vol. 83, Issue 1 https://doi.org/10.7566/JPSJ.83.014705	journal	January 2014
Crossover of Magnetoresistance from Fourfold to Twofold Symmetry in SmB ₆ Single Crystal, a Topological Kondo Insulator Yue, Zengji; Wang, Xiaolin; Wang, Duanliang Journal of the Physical Society of Japan, Vol. 84, Issue 4 https://doi.org/10.7566/JPSJ.84.044717	journal	April 2015

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