Pressure-temperature phase diagram of the EuRbFe4As4 superconductor

Li Xiang, Sergey L. Bud'ko, Jin Ke Bao, Duck Young Chung, Mercouri G. Kanatzidis, Paul C. Canfield

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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, 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 field is gradually suppressed with increasing pressure, which may be due to the continuous change of Fermi velocity vF with pressure.

Original languageEnglish
Article number144509
JournalPhysical Review B
Volume99
Issue number14
DOIs
Publication statusPublished - Apr 11 2019

    Fingerprint

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Xiang, L., Bud'ko, S. L., Bao, J. K., Chung, D. Y., Kanatzidis, M. G., & Canfield, P. C. (2019). Pressure-temperature phase diagram of the EuRbFe4As4 superconductor. Physical Review B, 99(14), [144509]. https://doi.org/10.1103/PhysRevB.99.144509