Dmytruk, Olesia and Loss, Daniel and Klinovaja, Jelena. (2020) Pinning of Andreev bound states to zero energy in two-dimensional superconductor- semiconductor Rashba heterostructures. Physical Review B, 102 (24). p. 245431.
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Official URL: https://edoc.unibas.ch/80709/
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Abstract
We consider a two-dimensional electron gas (2DEG) with Rashba spin-orbit interaction (SOT) partially covered by an s-wave superconductor, where the uncovered region remains normal but is exposed to a perpendicular Zeeman field. We find analytically and numerically Andreev bound states (ABSs) formed in the normal region and show that, by tuning the SOI to certain values, one can reach a regime where the energy of the lowest ABS becomes pinned close to zero as a function of Zeeman field. In addition, we also consider a configuration with a superconducting vortex and find again ABSs pinned close to zero energy in the topologically trivial phase for a wide range of parameters. Thus, ABSs and Majorana bound states show similar behavior in such structures.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik > Theoretical Nano/Quantum Physics (Klinovaja) |
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UniBasel Contributors: | Klinovaja, Jelena |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | American Physical Society |
ISSN: | 2469-9950 |
e-ISSN: | 2469-9969 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
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Identification Number: | |
Last Modified: | 07 Apr 2022 09:18 |
Deposited On: | 04 May 2021 14:21 |
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