Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session H13: New Theoretical Proposals for Topological Superconductivity
2:30 PM–5:30 PM,
Tuesday, March 6, 2018
LACC Room: 304A
Sponsoring Unit: DMP
Chair: Fan Zhang, University of Texas at Dallas
Abstract: H13.00002 : Topological Larkin-Ovchinnikov phase and Majorana zero mode chain in bilayer superconducting topological insulator films*
3:06 PM–3:18 PM
( The Pennsylvania State University)
(Kavli Institute for Theoretical Sciences)
We theoretically study bilayer superconducting topological insulator film, in which superconductivity exists for both top and bottom surface states. We show that an in-plane magnetic field can drive the system into Larkin-Ovchinnikov (LO) phase, where electrons are paired with finite momenta. The LO phase is topologically non-trivial and characterized by a Z2 topological invariant, leading to a Majorana zero mode chain along the edge perpendicular to in-plane magnetic fields.
*C.-X.L. acknowledges the support from Office of Naval Research (Grant No. N00014-15-1-2675). FCZ is partly supported by NSFC grant 11674278 and National Basic Research Program of China (No. 2014CB921203).
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