Change of the vortex core structure in two-band superconductors at the impurity-scattering-driven s±/s++ crossover
Abstract
We report a nontrivial transition in the core structure of vortices in two-band superconductors as a function
of interband impurity scattering. We demonstrate that, in addition to singular zeros of the order parameter, the
vortices there can acquire a circular nodal line around the singular point in one of the superconducting components.
It results in the formation of the peculiar “moat”-like profile in one of the superconducting gaps. The moat-core
vortices occur generically in the vicinity of the impurity-induced crossover between s± and s++ states.
Main Authors
Format
Articles
Research article
Published
2017
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201710103976Use this for linking
Review status
Peer reviewed
ISSN
2469-9950
DOI
https://doi.org/10.1103/physrevb.96.140503
Language
English
Published in
Physical Review B
Citation
- Garaud, J., Silaev, M., & Babaev, E. (2017). Change of the vortex core structure in two-band superconductors at the impurity-scattering-driven s±/s++ crossover. Physical Review B, 96(14), 140503(R). https://doi.org/10.1103/physrevb.96.140503
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Copyright© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.