TY - JOUR
T1 - Pressure-induced superconductivity in EuFe 2 As 2 without a quantum critical point
T2 - Magnetotransport and upper critical field measurements under high pressure
AU - Kurita, Nobuyuki
AU - Kimata, Motoi
AU - Kodama, Kota
AU - Harada, Atsushi
AU - Tomita, Megumi
AU - Suzuki, Hiroyuki S.
AU - Matsumoto, Takehiko
AU - Murata, Keizo
AU - Uji, Shinya
AU - Terashima, Taichi
PY - 2013/1/23
Y1 - 2013/1/23
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.88.224510
DO - 10.1103/PhysRevB.88.224510
M3 - Article
AN - SCOPUS:84892390101
SN - 0163-1829
VL - 88
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 224510
ER -