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Title: Pressure-temperature phase diagram of the EuRbFe 4As 4 superconductor

Abstract

The pressure dependencies of the magnetic and superconducting transitions, as well as that of the superconducting upper critical eld are reported for single crystalline EuRbFe 4As 4. Resistance measurements were performed under hydrostatic pressures up to 6.21 GPa and in magnetic elds up to 9 T. Zero- eld-cool magnetization measurements were performed under hydrostatic pressures up to 1.24 GPa under 20 mT applied eld. Superconducting transition temperature, T c, up to 6.21 GPa and magnetic transition temperature, T M, up to 1.24 GPa were obtained and a pressure-temperature phase diagram was constructed. Our results show that Tc is monotonically suppressed upon increasing pressure. T M is linearly increased up to 1.24 GPa. For the studied pressure range, no signs of the crossing of T M and T c lines are observed. The normalized slope of the superconducting upper critical eld is gradually suppressed with increasing pressure, which may be due to the continuous change of Fermi-velocity v F with pressure.

Authors:
 [1];  [1];  [2];  [2];  [2];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1509484
Alternate Identifier(s):
OSTI ID: 1506552
Report Number(s):
IS-J-9926
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; 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

Citation Formats

Xiang, Li, Bud'ko, Sergey L., Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., and Canfield, Paul C. Pressure-temperature phase diagram of the EuRbFe4As4 superconductor. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.144509.
Xiang, Li, Bud'ko, Sergey L., Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., & Canfield, Paul C. Pressure-temperature phase diagram of the EuRbFe4As4 superconductor. United States. doi:10.1103/PhysRevB.99.144509.
Xiang, Li, Bud'ko, Sergey L., Bao, Jin-Ke, Chung, Duck Young, Kanatzidis, Mercouri G., and Canfield, Paul C. Thu . "Pressure-temperature phase diagram of the EuRbFe4As4 superconductor". United States. doi:10.1103/PhysRevB.99.144509.
@article{osti_1509484,
title = {Pressure-temperature phase diagram of the EuRbFe4As4 superconductor},
author = {Xiang, Li and Bud'ko, Sergey L. and Bao, Jin-Ke and Chung, Duck Young and Kanatzidis, Mercouri G. and Canfield, Paul C.},
abstractNote = {The pressure dependencies of the magnetic and superconducting transitions, as well as that of the superconducting upper critical eld are reported for single crystalline EuRbFe4As4. Resistance measurements were performed under hydrostatic pressures up to 6.21 GPa and in magnetic elds up to 9 T. Zero- eld-cool magnetization measurements were performed under hydrostatic pressures up to 1.24 GPa under 20 mT applied eld. Superconducting transition temperature, Tc, up to 6.21 GPa and magnetic transition temperature, TM, up to 1.24 GPa were obtained and a pressure-temperature phase diagram was constructed. Our results show that Tc is monotonically suppressed upon increasing pressure. TM is linearly increased up to 1.24 GPa. For the studied pressure range, no signs of the crossing of TM and Tc lines are observed. The normalized slope of the superconducting upper critical eld is gradually suppressed with increasing pressure, which may be due to the continuous change of Fermi-velocity vF with pressure.},
doi = {10.1103/PhysRevB.99.144509},
journal = {Physical Review B},
number = 14,
volume = 99,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
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This content will become publicly available on April 11, 2020
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