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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2013 Jan 23|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics