Superconductivity with two-fold symmetry in topological superconductor SrxBi2Se3

被引：65

作者：

Du, Guan ^{[1
,2
]}

Li, YuFeng ^{[1
,2
]}

Schneeloch, J. ^{[3
]}

Zhong, R. D. ^{[3
]}

Gu, GenDa ^{[3
]}

Yang, Huan ^{[1
,2
,4
]}

Lin, Hai ^{[1
,2
]}

Wen, Hai-Hu ^{[1
,2
,4
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China

[3] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[4] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2017年 / 60卷 / 03期

基金：

中国国家自然科学基金;

关键词：

topological phase; pairing symmetries; transport properties; MAJORANA FERMIONS; BREAKING;

D O I：

10.1007/s11433-016-0499-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Topological superconductivity is the quantum condensate of paired electrons with an odd parity of the pairing function. By using a Corbino-shape like electrode configuration, we measure the c-axis resistivity of the recently discovered superconductor SrxBi(2)Se(3) with the magnetic field rotating within the basal planes, and find clear evidence of two-fold superconductivity. The Laue diffraction measurements on these samples show that the maximum gap direction is either parallel or perpendicular to the main crystallographic axis. This observation is consistent with the theoretical prediction and strongly suggests that SrxBi(2)Se(3) is a topological superconductor.

引用

页数：6

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