Theory of the magnetic response in finite two-dimensional superconductors

We present a theory of magnetic response in finite-size two-dimensional superconductors with Rashba spin-orbit coupling. The interplay between the latter and an in-plane Zeeman field leads on the one hand to an out-of-plane spin polarization which accumulates at the edges of the sample over the supe...

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Detalles Bibliográficos
Autores: Bergeret, F. Sebastian, Tokatly, Ilya
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/226442
Acceso en línea:http://hdl.handle.net/10261/226442
Access Level:acceso abierto
Descripción
Sumario:We present a theory of magnetic response in finite-size two-dimensional superconductors with Rashba spin-orbit coupling. The interplay between the latter and an in-plane Zeeman field leads on the one hand to an out-of-plane spin polarization which accumulates at the edges of the sample over the superconducting coherence length, and on the other hand, to circulating supercurrents decaying away from the edge over a macroscopic scale. In a long finite stripe of width W, both the spin polarization and the currents contribute to the total magnetic moment induced at the stripe ends. These two contributions scale with powers of W such that for sufficiently large samples it can be detected by current magnetometry techniques.

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