Time-reversal symmetry breaking in the Fe-chalcogenide superconductors

Zaki, Nader; Gu, Genda; Tsvelik, Alexei; Wu, Congjun; Johnson, Peter D.

doi:10.1073/pnas.2007241118

Time-reversal symmetry breaking in the Fe-chalcogenide superconductors

Journal Article · Mon Jan 11 23:00:00 EST 2021 · Proceedings of the National Academy of Sciences of the United States of America

DOI:https://doi.org/10.1073/pnas.2007241118· OSTI ID:1759082

Zaki, Nader ^[1]; Gu, Genda ^[1]; ^[1]; Wu, Congjun ^[2]; Johnson, Peter D. ^[1]

Condensed Matter Physics and Materials Science Division (CMPMSD), Brookhaven National Laboratory, Upton, NY 11973,
Department of Physics, University of California, San Diego, CA 92093

Significance

In the Fe-chalcogenide superconductors, topology, superconductivity, and magnetism all come together to provide a platform for a range of exotic quantum phenomena. Topology and superconductivity can interact to give topological superconductivity capable of supporting Majorana fermions that could prove to be the basis of future qubit technology. The large spin–orbit interaction associated with the topological phenomena combined with magnetism can potentially result in the quantum anomalous Hall effect although the superconductivity will work against such. It is important that we understand the relevant roles of the different phenomena. Here we provide evidence of time-reversal symmetry breaking and associated mass acquisition in a topological surface state at the superconducting transition, an observation highly suggestive of the formation of surface ferromagnetism.

View Journal Article

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-98CH10886

OSTI ID:: 1759082

Alternate ID(s):: OSTI ID: 1735708

Journal Information:: Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 3 Vol. 118; ISSN 0027-8424

Publisher:: Proceedings of the National Academy of SciencesCopyright Statement

Country of Publication:: United States

Language:: English

References (18)

From quantum matter to high-temperature superconductivity in copper oxides Keimer, B.; Kivelson, S. A.; Norman, M. R. Nature, Vol. 518, Issue 7538 https://doi.org/10.1038/nature14165	journal	February 2015
Giant superconducting fluctuations in the compensated semimetal FeSe at the BCS–BEC crossover Kasahara, S.; Yamashita, T.; Shi, A. Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms12843	journal	September 2016
Dimensional tuning of Majorana fermions and real space counting of the Chern number Mascot, Eric; Cocklin, Sagen; Rachel, Stephan Physical Review B, Vol. 100, Issue 18 https://doi.org/10.1103/PhysRevB.100.184510	journal	November 2019
Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors Ghazaryan, Areg; Lopes, P. L. S.; Hosur, Pavan Physical Review B, Vol. 101, Issue 2 https://doi.org/10.1103/PhysRevB.101.020504	journal	January 2020
Nodal quasiparticle lifetimes in cuprate superconductors Dahm, T.; Hirschfeld, P. J.; Scalapino, D. J. Physical Review B, Vol. 72, Issue 21 https://doi.org/10.1103/PhysRevB.72.214512	journal	December 2005
Isotropic superconducting gaps with enhanced pairing on electron Fermi surfaces in FeTe 0.55 Se 0.45 Miao, H.; Richard, P.; Tanaka, Y. Physical Review B, Vol. 85, Issue 9 https://doi.org/10.1103/PhysRevB.85.094506	journal	March 2012
Anisotropic vortex lattice structures in the FeSe superconductor Hung, Hsiang-Hsuan; Song, Can-Li; Chen, Xi Physical Review B, Vol. 85, Issue 10 https://doi.org/10.1103/PhysRevB.85.104510	journal	March 2012
Interplay of paramagnetism and topology in the Fe-chalcogenide high- T c superconductors Rameau, J. D.; Zaki, N.; Gu, G. D. Physical Review B, Vol. 99, Issue 20 https://doi.org/10.1103/PhysRevB.99.205117	journal	May 2019
Spin-Orbit Interactions and the Nematicity Observed in the Fe-Based Superconductors Johnson, P. D.; Yang, H. -B.; Rameau, J. D. Physical Review Letters, Vol. 114, Issue 16 https://doi.org/10.1103/PhysRevLett.114.167001	journal	April 2015
Detecting nonunitary multiorbital superconductivity with Dirac points at finite energies Lado, J. L.; Sigrist, M. Physical Review Research, Vol. 1, Issue 3 https://doi.org/10.1103/PhysRevResearch.1.033107	journal	November 2019
Pairing symmetry and topological surface state in iron-chalcogenide superconductors Hu, Lun-Hui; Johnson, P. D.; Wu, Congjun Physical Review Research, Vol. 2, Issue 2 https://doi.org/10.1103/PhysRevResearch.2.022021	journal	April 2020
Topological orders competing for the Dirac surface state in FeSeTe surfaces Wu, Xianxin; Chung, Suk Bum; Liu, Chaoxing Physical Review Research, Vol. 3, Issue 1 https://doi.org/10.1103/PhysRevResearch.3.013066	journal	January 2021
Evidence for orbital order and its relation to superconductivity in FeSe _0.4 Te _0.6 Singh, Udai R.; White, Seth C.; Schmaus, Stefan Science Advances, Vol. 1, Issue 9 https://doi.org/10.1126/sciadv.1500206	journal	October 2015
Tuning across the BCS-BEC crossover in the multiband superconductor Fe _{1+ y} Se _x Te _{1− x} : An angle-resolved photoemission study Rinott, Shahar; Chashka, K. B.; Ribak, Amit Science Advances, Vol. 3, Issue 4 https://doi.org/10.1126/sciadv.1602372	journal	April 2017
Massive Dirac Fermion on the Surface of a Magnetically Doped Topological Insulator Chen, Y. L.; Chu, J. - H.; Analytis, J. G. Science, Vol. 329, Issue 5992 https://doi.org/10.1126/science.1189924	journal	August 2010
Discovery of orbital-selective Cooper pairing in FeSe Sprau, P. O.; Kostin, A.; Kreisel, A. Science, Vol. 357, Issue 6346 https://doi.org/10.1126/science.aal1575	journal	July 2017
Observation of topological superconductivity on the surface of an iron-based superconductor Zhang, Peng; Yaji, Koichiro; Hashimoto, Takahiro Science, Vol. 360, Issue 6385 https://doi.org/10.1126/science.aan4596	journal	March 2018
Evidence for dispersing 1D Majorana channels in an iron-based superconductor Wang, Zhenyu; Rodriguez, Jorge Olivares; Jiao, Lin Science, Vol. 367, Issue 6473 https://doi.org/10.1126/science.aaw8419	journal	January 2020

Similar Records

Strong Correlation Between Superconductivity and Ferromagnetism in an Fe-Chalcogenide Superconductor

Journal Article · Wed Sep 08 00:00:00 EDT 2021 · Nano Letters · OSTI ID:1827162

Time-reversal symmetry breaking in the Fe-chalcogenide superconductors

Citation Formats

References (18)

Similar Records

Related Subjects