scholarly journals Proximity induced time-reversal topological superconductivity in Bi2Se3 films without phase tuning

2019 ◽  
Vol 99 (16) ◽  
Author(s):  
Oscar E. Casas ◽  
Liliana Arrachea ◽  
William J. Herrera ◽  
Alfredo Levy Yeyati
Keyword(s):  
Time Reversal ◽  
Phase Tuning ◽  
Topological Superconductivity

scholarly journals Time-reversal-invariant topological superconductivity in doped Weyl semimetals

2014 ◽  
Vol 90 (4) ◽  
Author(s):  
Pavan Hosur ◽  
Xi Dai ◽  
Zhong Fang ◽  
Xiao-Liang Qi
Keyword(s):  
Time Reversal ◽  
Weyl Semimetals ◽  
Topological Superconductivity

scholarly journals DIII topological superconductivity with emergent time-reversal symmetry

2017 ◽  
Vol 96 (16) ◽  
Author(s):  
Christopher Reeg ◽  
Constantin Schrade ◽  
Jelena Klinovaja ◽  
Daniel Loss
Keyword(s):  
Time Reversal ◽  
Time Reversal Symmetry ◽  
Topological Superconductivity

scholarly journals Time-reversal symmetry breaking in the Fe-chalcogenide superconductors

2021 ◽  
Vol 118 (3) ◽  
pp. e2007241118
Author(s):  
Nader Zaki ◽  
Genda Gu ◽  
Alexei Tsvelik ◽  
Congjun Wu ◽  
Peter D. Johnson
Keyword(s):  
Symmetry Breaking ◽  
Time Reversal ◽  
Chemical Potential ◽  
Majorana Fermions ◽  
Time Reversal Symmetry ◽  
Superconducting Transition ◽  
Topological State ◽  
Intrinsic Ferromagnetism ◽  
Topological Surface ◽  
Topological Superconductivity

Topological superconductivity has been sought in a variety of heterostructure systems, the interest being that a material displaying such a phenomenon could prove to be the ideal platform to support Majorana fermions, which in turn could be the basis for advanced qubit technologies. Recently, the high-Tc family of superconductors, FeTe1−xSex, have been shown to exhibit the property of topological superconductivity and further, evidence has been found for the presence of Majorana fermions. We have studied the interplay of topology, magnetism, and superconductivity in the FeTe1−xSex family using high-resolution laser-based photoemission. At the bulk superconducting transition, a gap opens at the chemical potential as expected. However, a second gap is observed to open at the Dirac point in the topological surface state. The associated mass acquisition in the topological state points to time-reversal symmetry breaking, probably associated with the formation of ferromagnetism in the surface layer. The presence of intrinsic ferromagnetism combined with strong spin–orbit coupling provides an ideal platform for a range of exotic topological phenomena.

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