Time reversal symmetry breaking and zero magnetic field Josephson diode effect in Dirac semimetal Cd3As2 mediated asymmetric SQUIDs

被引：1

作者：

Yu, W. ^{[1
]}

Cuozzo, J. J. ^{[2
]}

Sapkota, K. ^{[1
]}

Rossi, E. ^{[3
]}

Rademacher, D. X. ^{[1
]}

Nenoff, T. M. ^{[1
]}

Pan, W. ^{[2
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

[2] Sandia Natl Labs, Livermore, CA 94551 USA

[3] William & Mary, Dept Phys, Williamsburg, VA 23187 USA

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 10期

基金：

美国国家科学基金会;

关键词：

Diodes - Gallium compounds - Josephson junction devices - Semiconducting cadmium compounds - SQUIDs;

D O I：

10.1103/PhysRevB.110.104510

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A zero-magnetic-field Josephson diode effect (JDE) is observed in an asymmetric superconducting quantum interference device (SQUID) mediated by Dirac semimetal Cd3As2. We argue that a phase coupling between the surface and bulk superconducting channels, a unique phenomenon recently identified in the observations of fractional Josephson effect and Leggett modes in Cd3As2, can break time reversal symmetry and therefore give rise to the zero-field JDE. Our results are anticipated to have important implications in superconducting electronic circuit applications.

引用

页数：9

共 39 条

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