Pairing-dependent superconductivity gap and nonholonomic Andreev reflection in Weyl semimetal/Weyl superconductor heterojunctions

Fang, Jun1; Duan, Wenye1; Liu, Junfeng2; Zhang, Chao3; Ma, Zhongshui1,4

2018-04-04

10.1103/PhysRevB.97.165301

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

We study superconductivity states mediated by the BCS and Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) pairings in superconducting Weyl semimetals. It is found that a mixture of BCS and FFLO pairings results in a distinctive double-gap structure for superconducting states. With a heterojunction of a Weyl semimetal and a superconducting Weyl semimetal, we demonstrate the nonholonomic Andreev reflection and show that the intra- and internode Andreev reflections increase at the edges of the effective gap. The influence of interface potentials on the Andreev reflections is investigated. The conductance spectra arising from the mixed superconducting pairings is also analyzed.

SCI ; EI

英语

其他

Australian Research Council[DP160101474]

Materials Science ; Physics

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

WOS:000429115300005

AMER PHYSICAL SOC

20191906874752

Semiconductor Devices and Integrated Circuits:714.2

PHYSICS

Web of Science

1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
3.Univ Wollongong, Sch Phys, Wollongong, NSW 2522, Australia
4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Fang, Jun,Duan, Wenye,Liu, Junfeng,et al. Pairing-dependent superconductivity gap and nonholonomic Andreev reflection in Weyl semimetal/Weyl superconductor heterojunctions[J]. PHYSICAL REVIEW B,2018,97(16).

Fang, Jun,Duan, Wenye,Liu, Junfeng,Zhang, Chao,&Ma, Zhongshui.(2018).Pairing-dependent superconductivity gap and nonholonomic Andreev reflection in Weyl semimetal/Weyl superconductor heterojunctions.PHYSICAL REVIEW B,97(16).

Fang, Jun,et al."Pairing-dependent superconductivity gap and nonholonomic Andreev reflection in Weyl semimetal/Weyl superconductor heterojunctions".PHYSICAL REVIEW B 97.16(2018).