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Time-reversal invariant topological superconductivity in planar Josephson bijunction

Volpez, Yanick and Loss, Daniel and Klinovaja, Jelena. (2020) Time-reversal invariant topological superconductivity in planar Josephson bijunction. Physical Review Research, 2 (2). 023415.

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Official URL: https://edoc.unibas.ch/80695/

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Abstract

We consider a Josephson bijunction consisting of a thin SISπ-Josephson junction sandwiched between two-dimensional semiconducting layers with strong Rashba spin-orbit interaction. Each of these layers forms an SNS junction due to proximity-induced superconductivity. The SIS junction is assumed to be thin enough such that the two Rashba layers are tunnel coupled. We show that, by tuning external gates, this system can be controllably brought into a time-reversal invariant topological superconducting phase with a Kramers pair of Majorana bound states being localized at the end of the normal region for a large parameter phase space. In particular, in the strong spin-orbit interaction limit, the topological phase can be accessed already in the regime of small tunneling amplitudes.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretical Nano/Quantum Physics (Klinovaja)
UniBasel Contributors:Klinovaja, Jelena
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
e-ISSN:2643-1564
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:20 Apr 2021 15:32
Deposited On:20 Apr 2021 15:24

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