Electrically modulated SQUID with a single Josephson junction coupled by a time reversal breaking Weyl semimetal thin film

Xu, Yong1; Uddin, Salah1; Wang, Jun2; Ma, Zhongshui3,4; Liu, Jun-Feng1

2018-01-22

10.1103/PhysRevB.97.035427

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

Usually, the superconducting quantum interference device (SQUID) consists of two Josephson junctions, and the interference therein is modulated by a magnetic flux. In this paper, we propose an electrically modulated SQUID consisting of a single Josephson junction coupled by a time reversal breaking Weyl semimetal thin film. For a low Fermi energy, the Josephson current is only mediated by Fermi arc surface states and has an arbitrary ground-state phase difference phi(0) which is directly proportional to the product of the transverse electric field and the cross section area of the junction. For a suitable Fermi energy, the bulk states make comparable contributions to the Josephson current with the current-phase relation of a 0 junction. The interference between the surface channel and the bulk channel results in an electrically modulated SQUID with single Josephson junction, which provides an experimental proposal to identify magnetic Weyl semimetals and may have potential applications in superconducting quantum computation.

SCI

英语

第一 ; 通讯

National Natural Science Foundation of China (NSFC)[11774144] ; National Natural Science Foundation of China (NSFC)[11574045]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000423341500005

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Southeast Univ, Dept Phys, Nanjing 210096, Jiangsu, Peoples R China
3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Xu, Yong,Uddin, Salah,Wang, Jun,et al. Electrically modulated SQUID with a single Josephson junction coupled by a time reversal breaking Weyl semimetal thin film[J]. PHYSICAL REVIEW B,2018,97(3).

Xu, Yong,Uddin, Salah,Wang, Jun,Ma, Zhongshui,&Liu, Jun-Feng.(2018).Electrically modulated SQUID with a single Josephson junction coupled by a time reversal breaking Weyl semimetal thin film.PHYSICAL REVIEW B,97(3).

Xu, Yong,et al."Electrically modulated SQUID with a single Josephson junction coupled by a time reversal breaking Weyl semimetal thin film".PHYSICAL REVIEW B 97.3(2018).