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Title: Pressure-temperature phase diagram of the EuRbFe4As4 superconductor

Journal Article · · Physical Review B
 [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)

The pressure dependencies of the magnetic and superconducting transitions, as well as that of the superconducting upper critical field, are reported for single crystalline EuRbFe4As4. Resistance measurements were performed under hydrostatic pressures up to 6.21 GPa and in magnetic fields up to 9 T. Zero-field-cooled magnetization measurements were performed under hydrostatic pressures up to 1.24 GPa under 20 mT applied field. 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 T-c 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 field is gradually suppressed with increasing pressure, which may be due to the continuous change of Fermi velocity v(F) with pressure.

Research Organization:
Ames Lab., Ames, IA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358; AC02-06CH11357
OSTI ID:
1509484
Alternate ID(s):
OSTI ID: 1506552; OSTI ID: 1509819
Report Number(s):
IS-J-9926; PRBMDO
Journal Information:
Physical Review B, Vol. 99, Issue 14; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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