Pressure-induced reemergence of superconductivity in topological insulator Sr0.065Bi2Se3

被引：32

作者：

Zhou, Yonghui ^{[1
,2
,3
]}

Chen, Xuliang ^{[1
,2
,3
]}

Zhang, Ranran ^{[1
,2
]}

Shao, Jifeng ^{[1
,2
]}

Wang, Xuefei ^{[1
,2
,3
]}

An, Chao ^{[1
,2
,3
]}

Zhou, Ying ^{[1
,2
,3
]}

Park, Changyong ^{[4
]}

Tong, Wei ^{[1
,2
]}

Pi, Li ^{[1
,2
,5
]}

Yang, Zhaorong ^{[1
,2
,3
,5
]}

Zhang, Changjin ^{[1
,2
,5
]}

Zhang, Yuheng ^{[1
,2
,5
]}

机构：

[1] Chinese Acad Sci, High Field Magnet Lab, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

[4] Carnegie Inst Sci, High Pressure Collaborat Access Team, Geophys Lab, Argonne, IL 60439 USA

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

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 14期

基金：

中国国家自然科学基金;

关键词：

SPIN; BI2SE3; TEMPERATURE; ORDER;

D O I：

10.1103/PhysRevB.93.144514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The recently discovered SrxBi2Se3 superconductor provides an alternative and ideal material base for investigating possible topological superconductivity. Here, we report that in Sr0.065Bi2Se3, the ambient superconducting phase is gradually depressed upon the application of external pressure. At high pressure, a second superconducting phase emerges at above 6 GPa, with a maximum T-c value of similar to 8.3 K. The joint investigations of the high-pressure synchrotron x-ray diffraction and electrical transport properties reveal that the reemergence of superconductivity in Sr0.065Bi2Se3 is closely related to the structural phase transition from an ambient rhombohedral phase to a high-pressure monoclinic phase around 6 GPa, and further to another high-pressure tetragonal phase above 25 GPa.

引用

页数：5

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