RT Journal Article
T1 Topological phases in nodeless tetragonal superconductors
A1 Varona Angulo, Santiago
A1 Ortiz Martín, Laura
A1 Viyuela, O.
A1 Martín-Delgado Alcántara, Miguel Ángel
AB We compute the topological phase diagram of 2D tetragonal superconductors for the only possible nodeless pairing channels compatible with that crystal symmetry. Subject to a Zeeman field and spin-orbit coupling, we demonstrate that these superconductors show surprising topological features: non-trivial high Chern numbers, massive edge states, and zero-energy modes out of high symmetry points, even though the edge states remain topologically protected. Interestingly, one of these pairing symmetries, d + id, has been proposed to describe materials such as water-intercalated sodium cobaltates, bilayer silicene or highly doped monolayer graphene.
PB IoP publishing ltd
SN 0953-8984
YR 2018
FD 2018-10-03
LK https://hdl.handle.net/20.500.14352/12974
UL https://hdl.handle.net/20.500.14352/12974
LA eng
NO © 2018 IOP Publishing Ltd. We acknowledge financial support from the Spanish MINECO grants FIS2012-33152, FIS2015-67411, and the CAM research consortium QUITEMAD + , Grant No. S2013/ ICE-2801. The research of MAM-D has been supported in part by the US. Army Research Office through Grant No. W911N F-14-1-0103. OV thanks Hiroki Isobe for interesting discussions, Fundación Ramón Areces and RCC Harvard. SV thanks FPU MECD Grant.
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO US. Army Research Office
NO FPU MECD
DS Docta Complutense
RD 10 abr 2025