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arXiv · 1708.00600

Topological Larkin-Ovchinnikov phase and Majorana zero mode chain in bilayer superconducting topological insulator films

Lun-Hui Hu·Chao-Xing Liu·Fu-Chun Zhang
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Abstract

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 Z 2 topological invariant, leading to a Majorana zero mode chain along the edge perpendicular to in-plane magnetic fields.

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Lun-Hui Hu, Chao-Xing Liu, Fu-Chun Zhang. 2017-08-02. Topological Larkin-Ovchinnikov phase and Majorana zero mode chain in bilayer superconducting topological insulator films. https://doi.org/10.1038/s42005-019-0126-8

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