Majorana bound states in double nanowires with reduced Zeeman thresholds due to supercurrents

Dmytruk, Olesia and Thakurathi, Manisha and Loss, Daniel and Klinovaja, Jelena. (2019) Majorana bound states in double nanowires with reduced Zeeman thresholds due to supercurrents. Physical Review B, 99 (24). p. 245416.

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We study the topological phase diagram of a setup composed of two nanowires with strong Rashba spin-orbit interaction subjected to an external magnetic field and brought into the proximity to a bulk s-wave superconductor in the presence of a supercurrent flowing through it. The supercurrent reduces the critical values of the Zeeman energy and crossed Andreev superconducting pairing required to reach the topological phase characterized by the presence of one Majorana bound state localized at each system end. We demonstrate that, even in the regime of the crossed Andreev pairing being smaller than the direct pairing, a relatively weak magnetic field drives the system into the topological phase due to the presence of the supercurrent.
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
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:16 Apr 2020 13:39
Deposited On:16 Apr 2020 13:39

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