Gate-induced superconductivity in a monolayer topological insulator

Sajadi, Ebrahim; Palomaki, Tauno; Fei, Zaiyao; Zhao, Wenjin; Bement, Philip; Olsen, Christian; Luescher, Silvia; Xu, Xiaodong; Folk, Joshua A.; Cobden, David H.

doi:10.1126/science.aar4426

Gate-induced superconductivity in a monolayer topological insulator

Journal Article · 25 October 2018 · Science

DOI:https://doi.org/10.1126/science.aar4426· OSTI ID:1610665

^[1]; Palomaki, Tauno; Fei, Zaiyao; Zhao, Wenjin; ; Olsen, Christian; Luescher, Silvia; ; ; Cobden, David H.

DOE/OSTI

The layered semimetal tungsten ditelluride (WTe₂) has recently been found to be a two-dimensional topological insulator (2D TI) when thinned down to a single monolayer, with conducting helical edge channels. We found that intrinsic superconductivity can be induced in this monolayer 2D TI by mild electrostatic doping at temperatures below 1 kelvin. The 2D TI–superconductor transition can be driven by applying a small gate voltage. This discovery offers possibilities for gate-controlled devices combining superconductivity and nontrivial topological properties, and could provide a basis for quantum information schemes based on topological protection.

Research Organization:: Univ. of Washington, Seattle, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: SC0002197; SC0018171

OSTI ID:: 1610665

Journal Information:: Science, Journal Name: Science Journal Issue: 6417 Vol. 362; ISSN 0036-8075

Publisher:: AAAS

Country of Publication:: United States

Language:: English

References (37)

Theory of the upper critical field in layered superconductors Klemm, R. A.; Luther, A.; Beasley, M. R. Physical Review B, Vol. 12, Issue 3 https://doi.org/10.1103/PhysRevB.12.877	journal	August 1975
Superconductivity in CuxTiSe2 Morosan, E.; Zandbergen, H. W.; Dennis, B. S. Nature Physics, Vol. 2, Issue 8 https://doi.org/10.1038/nphys360	journal	July 2006
Evidence for defect-induced superconductivity up to 49 K in ( C a 1 − x R x ) F e 2 A s 2 Deng, L. Z.; Lv, B.; Zhao, K. Physical Review B, Vol. 93, Issue 5 https://doi.org/10.1103/PhysRevB.93.054513	journal	February 2016
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
Direct visualization of a two-dimensional topological insulator in the single-layer 1 T ′ − WT e 2 Jia, Zhen-Yu; Song, Ye-Heng; Li, Xiang-Bing Physical Review B, Vol. 96, Issue 4 https://doi.org/10.1103/PhysRevB.96.041108	journal	July 2017
Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal Wu, Sanfeng; Fatemi, Valla; Gibson, Quinn D. Science, Vol. 359, Issue 6371 https://doi.org/10.1126/science.aan6003	journal	January 2018
Nature of the quantum metal in a two-dimensional crystalline superconductor Tsen, A. W.; Hunt, B.; Kim, Y. D. Nature Physics, Vol. 12, Issue 3 https://doi.org/10.1038/nphys3579	journal	December 2015
Gate-induced superconductivity in atomically thin MoS2 crystals Costanzo, Davide; Jo, Sanghyun; Berger, Helmuth Nature Nanotechnology, Vol. 11, Issue 4 https://doi.org/10.1038/nnano.2015.314	journal	January 2016
Type-II Weyl semimetals Soluyanov, Alexey A.; Gresch, Dominik; Wang, Zhijun Nature, Vol. 527, Issue 7579 https://doi.org/10.1038/nature15768	journal	November 2015
Edge conduction in monolayer WTe2 Fei, Zaiyao; Palomaki, Tauno; Wu, Sanfeng Nature Physics, Vol. 13, Issue 7 https://doi.org/10.1038/nphys4091	journal	April 2017
Quantum spin Hall state in monolayer 1T'-WTe2 Tang, Shujie; Zhang, Chaofan; Wong, Dillon Nature Physics, Vol. 13, Issue 7 https://doi.org/10.1038/nphys4174	journal	June 2017
Observation of topological states residing at step edges of WTe2 Peng, Lang; Yuan, Yuan; Li, Gang Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/s41467-017-00745-8	journal	September 2017
Effects of magnetic impurities on upper critical fields in the high- T _c superconductor La-doped CaFe ₂ As ₂ Jung, Soon-Gil; Shin, Soohyeon; Jang, Harim Superconductor Science and Technology, Vol. 30, Issue 8 https://doi.org/10.1088/1361-6668/aa766c	journal	July 2017
Effect of Pauli Paramagnetism on Magnetic Properties of High-Field Superconductors Maki, Kazumi Physical Review, Vol. 148, Issue 1 https://doi.org/10.1103/PhysRev.148.362	journal	August 1966
Topological superconductors: a review Sato, Masatoshi; Ando, Yoichi Reports on Progress in Physics, Vol. 80, Issue 7 https://doi.org/10.1088/1361-6633/aa6ac7	journal	May 2017
Gate-induced superconductivity in two-dimensional atomic crystals Saito, Yu; Nojima, Tsutomu; Iwasa, Yoshihiro Superconductor Science and Technology, Vol. 29, Issue 9 https://doi.org/10.1088/0953-2048/29/9/093001	journal	July 2016
Magnetoresistance and quantum oscillations of an electrostatically tuned semimetal-to-metal transition in ultrathin WTe 2 Fatemi, Valla; Gibson, Quinn D.; Watanabe, Kenji Physical Review B, Vol. 95, Issue 4 https://doi.org/10.1103/PhysRevB.95.041410	journal	January 2017
Upper Limit for the Critical Field in Hard Superconductors Clogston, A. M. Physical Review Letters, Vol. 9, Issue 6 https://doi.org/10.1103/PhysRevLett.9.266	journal	September 1962
Quantum Spin Hall Insulator State in HgTe Quantum Wells Konig, M.; Wiedmann, S.; Brune, C. Science, Vol. 318, Issue 5851, p. 766-770 https://doi.org/10.1126/science.1148047	journal	November 2007
Electric-field-induced superconductivity in an insulator Ueno, K.; Nakamura, S.; Shimotani, H. Nature Materials, Vol. 7, Issue 11, p. 855-858 https://doi.org/10.1038/nmat2298	journal	October 2008
Large, non-saturating magnetoresistance in WTe2 Ali, Mazhar N.; Xiong, Jun; Flynn, Steven Nature, Vol. 514, Issue 7521 https://doi.org/10.1038/nature13763	journal	September 2014
Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride Zomer, P. J.; Guimarães, M. H. D.; Brant, J. C. Applied Physics Letters, Vol. 105, Issue 1 https://doi.org/10.1063/1.4886096	journal	July 2014
Majorana zero modes and topological quantum computation Sarma, Sankar Das; Freedman, Michael; Nayak, Chetan npj Quantum Information, Vol. 1, Issue 1 https://doi.org/10.1038/npjqi.2015.1	journal	October 2015
Quantum spin Hall effect in two-dimensional transition metal dichalcogenides Qian, X.; Liu, J.; Fu, L. Science, Vol. 346, Issue 6215 https://doi.org/10.1126/science.1256815	journal	November 2014
Superconductor-Insulator Transitions Goldman, A. M. International Journal of Modern Physics B, Vol. 24, Issue 20n21 https://doi.org/10.1142/S0217979210056451	journal	August 2010
Superconductivity emerging from a suppressed large magnetoresistant state in tungsten ditelluride Kang, Defen; Zhou, Yazhou; Yi, Wei Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms8804	journal	July 2015
Pressure Induced Superconductivity in Pristine 1 T − TiSe 2 Kusmartseva, A. F.; Sipos, B.; Berger, H. Physical Review Letters, Vol. 103, Issue 23 https://doi.org/10.1103/PhysRevLett.103.236401	journal	November 2009
Gated tuned superconductivity and phonon softening in monolayer and bilayer MoS2 Fu, Yajun; Liu, Erfu; Yuan, Hongtao npj Quantum Materials, Vol. 2, Issue 1 https://doi.org/10.1038/s41535-017-0056-1	journal	September 2017
Controlling many-body states by the electric-field effect in a two-dimensional material Li, L. J.; O’Farrell, E. C. T.; Loh, K. P. Nature, Vol. 529, Issue 7585 https://doi.org/10.1038/nature16175	journal	December 2015
Superconducting Proximity Effect and Majorana Fermions at the Surface of a Topological Insulator Fu, Liang; Kane, C. L. Physical Review Letters, Vol. 100, Issue 9 https://doi.org/10.1103/PhysRevLett.100.096407	journal	March 2008
Pristine and intercalated transition metal dichalcogenide superconductors Klemm, Richard A. Physica C: Superconductivity and its Applications, Vol. 514 https://doi.org/10.1016/j.physc.2015.02.023	journal	July 2015
Evidence for two-dimensional Ising superconductivity in gated MoS2 Lu, J. M.; Zheliuk, O.; Leermakers, I. Science, Vol. 350, Issue 6266 https://doi.org/10.1126/science.aab2277	journal	November 2015
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells Bernevig, B. A.; Hughes, T. L.; Zhang, S.-C. Science, Vol. 314, Issue 5806, p. 1757-1761 https://doi.org/10.1126/science.1133734	journal	December 2006
Control of spin–orbit torques through crystal symmetry in WTe2/ferromagnet bilayers MacNeill, D.; Stiehl, G. M.; Guimaraes, M. H. D. Nature Physics, Vol. 13, Issue 3 https://doi.org/10.1038/nphys3933	journal	November 2016
Z2 Topological Order and the Quantum Spin Hall Effect Kane, C. L.; Mele, E. J. Physical Review Letters, Vol. 95, Issue 14, Article No. 146802 https://doi.org/10.1103/PhysRevLett.95.146802	journal	September 2005
Perfect charge compensation in WTe ₂ for the extraordinary magnetoresistance: From bulk to monolayer Lv, H. Y.; Lu, W. J.; Shao, D. F. EPL (Europhysics Letters), Vol. 110, Issue 3 https://doi.org/10.1209/0295-5075/110/37004	journal	May 2015
Ising pairing in superconducting NbSe2 atomic layers Xi, Xiaoxiang; Wang, Zefang; Zhao, Weiwei Nature Physics, Vol. 12, Issue 2 https://doi.org/10.1038/nphys3538	journal	November 2015

Similar Records

Gate-induced superconductivity in a monolayer topological insulator

Journal Article · 2018 · Science · OSTI ID:1483111

Electrically tunable low-density superconductivity in a monolayer topological insulator

Journal Article · 2018 · Science · OSTI ID:1566717

Electrically tunable low-density superconductivity in a monolayer topological insulator

Journal Article · 2018 · Science · OSTI ID:1483110

Related Subjects

Science & Technology - Other Topics

Gate-induced superconductivity in a monolayer topological insulator

Citation Formats

References (37)

Similar Records

Related Subjects