Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Y15: Josephson Junction Stacks and Diodes
8:00 AM–11:00 AM,
Friday, March 8, 2024
Room: M100F
Sponsoring
Unit:
DCMP
Chair: Christopher Parzyck, Cornell University
Abstract: Y15.00005 : Anomalous Josephson effect in superconducting multilayers*
8:48 AM–9:00 AM
Presenter:
Aleksandr S Osin
(Hebrew University of Jerusalem)
Authors:
Aleksandr S Osin
(Hebrew University of Jerusalem)
Maxim Khodas
(Hebrew University of Jerusalem)
Alex Levchenko
(University of Wisconsin-Madison)
This allows us to find the current-phase relation of the junction.
The perturbation theory in junction conductance allows us to determine the first and second harmonics of the current-phase relation at a given magnetic field.
Strong spin-orbit interaction in S'-region makes the Josephson effect anomalous.
Specifically, the combination of the spin-orbit and Zeeman interactions give rise to an effective vector potential.
This causes each harmonic of the current-phase relation to shift without changing the overall shape of the current-phase relation.
*We acknowledge financial support from the Israel Science Foundation, Grant No. 2665/20 (A. O. and M. K.). This work at UW-Madison was financially supported by the National Science Foundation, Quantum Leap Challenge Institute for Hybrid Quantum Architectures and Networks Grant No. OMA-2016136. A. L. gratefully acknowledges H. I. Romnes Faculty Fellowship provided by the University of Wisconsin-Madison Office of the Vice Chancellor for Research and Graduate Education with funding from the Wisconsin Alumni Research Foundation.
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