Odd triplet superconductivity induced by a moving condensate

It has been commonly accepted that a magnetic field suppresses superconductivity by inducing the ordered motion of Cooper pairs. We demonstrate that a magnetic field can instead provide a generation of superconducting correlations by inducing the motion of a superconducting condensate. This effect a...

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Veröffentlicht in:Physical review. B 2020-09, Vol.102 (10), p.1, Article 100507
Hauptverfasser: Silaev, M. A., Bobkova, I., Bobkov, A. M.
Format: Artikel
Sprache:eng
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Zusammenfassung:It has been commonly accepted that a magnetic field suppresses superconductivity by inducing the ordered motion of Cooper pairs. We demonstrate that a magnetic field can instead provide a generation of superconducting correlations by inducing the motion of a superconducting condensate. This effect arises in superconductor/ferromagnet heterostructures in the presence of Rashba spin-orbital coupling. We predict the odd-frequency spin-triplet superconducting correlations called the Berezinskii order to be switched on at large distances from the superconductor/ferromagnet interface by the application of a magnetic field. This is shown to result in the unusual behavior of Josephson effect and local density of states in superconductor/ferromagnet structures.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.102.100507