August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【109】Magnetic response and topology of a staggered-Rashba superconductor

Aug 31, 2021, 3:30 PM
15m
Room A

Room A

Talk Condensed Matter Physics (KOND) Condensed Matter Physics

Speaker

Mark Fischer (University of Zurich)

Description

In a superconductor with inversion, spin-singlet and spin-triplet order parameters are distinct by symmetry and can be distinguished experimentally through their magnetic response. In non-centrosymmetric systems, however, the two order parameters mix and the magnetic response is inconclusive. In our work, we examine the situation, where inversion is broken locally in a sublattice, but retained globally. In particular, we investigate a system consisting of layers with alternating Rashba spin-orbit coupling in the z direction. In this case, the system shows signs of non-centrosymmetricity even in the three-dimensional limit. This opens a design path to new superconducting order parameters which are robust against magnetism.

Primary authors

Anastasiia Skurativska (University of Zurich) Mark Fischer (University of Zurich) Eric Schertenleib (ETH Zurich) Manfred Sigrist (ETH Zurich)

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