Pressure-induced superconductivity in EuFe 2 As 2 without a quantum critical point: Magnetotransport and upper critical field measurements under high pressure

Nobuyuki Kurita, Motoi Kimata, Kota Kodama, Atsushi Harada, Megumi Tomita, Hiroyuki S. Suzuki, Takehiko Matsumoto, Keizo Murata, Shinya Uji, Taichi Terashima

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Resistivity and Hall effect measurements of EuFe2As2 up to 3.2 GPa indicate no divergence of quasiparticle effective mass at the pressure Pc where the magnetic and structural transition disappears. This is corroborated by analysis of the temperature (T) dependence of the upper critical field. T-linear resistivity is observed at pressures slightly above Pc. The scattering rates for both electrons and holes are shown to be approximately T-linear. When a field is applied, a T2 dependence is recovered, indicating that the origin of the T-linear dependence is spin fluctuations.

Original languageEnglish
Article number224510
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number22
DOIs
Publication statusPublished - 2013 Jan 23
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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