Anomalous Josephson effect controlled by an Abrikosov vortex

The possibility of a fast and precise Abrikosov vortex manipulation by a focused laser beam opens the way to create laser-driven Josephson junctions. We theoretically demonstrate that a vortex pinned in the vicinity of the Josephson junction generates an arbitrary ground state phase which can be equ...

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Bibliographic Details
Published in:Physical review. B 2017-12, Vol.96 (21), Article 214515
Main Authors: Mironov, S., Goldobin, E., Koelle, D., Kleiner, R., Tamarat, Ph, Lounis, B., Buzdin, A.
Format: Article
Language:English
Subjects:
Computer memory
Josephson effect
Josephson junctions
Laser beams
Terahertz frequencies
Vortices
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Summary:The possibility of a fast and precise Abrikosov vortex manipulation by a focused laser beam opens the way to create laser-driven Josephson junctions. We theoretically demonstrate that a vortex pinned in the vicinity of the Josephson junction generates an arbitrary ground state phase which can be equal not only to 0 or π but to any desired φ0 value in between. Such φ0 junctions have many peculiar properties and may be effectively controlled by the optically driven Abrikosov vortex. Also we theoretically show that the Josephson junction with the embedded vortex can serve as an ultrafast memory cell operating at sub THz frequencies.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.96.214515