Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W58: Exotic Features of Superconductors
8:00 AM–9:48 AM,
Friday, March 6, 2020
Room: Mile High Ballroom 3B
Sponsoring
Unit:
DCMP
Abstract: W58.00001 : Aharonov-Casher effect with vortices in an amorphous superconductor
Presenter:
Arnab Roy
(Bar Ilan Univ)
Authors:
Arnab Roy
(Bar Ilan Univ)
Aviad Frydman
(Bar Ilan Univ)
An amorphous superconductor close to a superconductor-insulator transition (SIT) provides such a complex multiply connected region for superconducting vortices to interfere, as indicated by recent studies. In this study with amorphous indium oxide close to a disorder driven SIT, we introduce vortices in the system by applying a perpendicular magnetic field. The motion of these vortices around superconducting islands generates a complex interference pattern in the form of a spontaneous voltage that is tunable with both gate voltage and magnetic field. This effect is a demonstration of the quantum behavior of Josephson vortices which are present in the system close to the SIT.
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