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Title: Pressure-induced reemergence of superconductivity in topological insulator Sr 0.065 Bi 2 Se 3

Abstract

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 Tc value of ~8.3 K. Here, 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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [3];  [3];  [3]
  1. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China)
  2. Carnegie Inst. of Washington, Argonne, IL (United States)
  3. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1252747
Alternate Identifier(s):
OSTI ID: 1249975
Grant/Contract Number:  
AC02-06CH11357; NA0001974; FG02-99ER45775; U1532267; U1332143; 11574323
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 14; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; pressure effects; superconductivity; topological materials; X-ray diffraction; condensed matter & materials physics

Citation Formats

Zhou, Yonghui, Chen, Xuliang, Zhang, Ranran, Shao, Jifeng, Wang, Xuefei, An, Chao, Zhou, Ying, Park, Changyong, Tong, Wei, Pi, Li, Yang, Zhaorong, Zhang, Changjin, and Zhang, Yuheng. Pressure-induced reemergence of superconductivity in topological insulator Sr0.065Bi2Se3. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.144514.
Zhou, Yonghui, Chen, Xuliang, Zhang, Ranran, Shao, Jifeng, Wang, Xuefei, An, Chao, Zhou, Ying, Park, Changyong, Tong, Wei, Pi, Li, Yang, Zhaorong, Zhang, Changjin, & Zhang, Yuheng. Pressure-induced reemergence of superconductivity in topological insulator Sr0.065Bi2Se3. United States. doi:10.1103/PhysRevB.93.144514.
Zhou, Yonghui, Chen, Xuliang, Zhang, Ranran, Shao, Jifeng, Wang, Xuefei, An, Chao, Zhou, Ying, Park, Changyong, Tong, Wei, Pi, Li, Yang, Zhaorong, Zhang, Changjin, and Zhang, Yuheng. Tue . "Pressure-induced reemergence of superconductivity in topological insulator Sr0.065Bi2Se3". United States. doi:10.1103/PhysRevB.93.144514. https://www.osti.gov/servlets/purl/1252747.
@article{osti_1252747,
title = {Pressure-induced reemergence of superconductivity in topological insulator Sr0.065Bi2Se3},
author = {Zhou, Yonghui and Chen, Xuliang and Zhang, Ranran and Shao, Jifeng and Wang, Xuefei and An, Chao and Zhou, Ying and Park, Changyong and Tong, Wei and Pi, Li and Yang, Zhaorong and Zhang, Changjin and Zhang, Yuheng},
abstractNote = {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 Tc value of ~8.3 K. Here, 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.},
doi = {10.1103/PhysRevB.93.144514},
journal = {Physical Review B},
number = 14,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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    Works referencing / citing this record:

    Pressure-Induced New Topological Weyl Semimetal Phase in TaAs
    journal, September 2016