The field dependence of the electronic specific heat γ(H) of URhGe is determined using temperature-dependent magnetization measurements and Maxwell's relation for all three orthorhombic directions. A large (40%) enhancement of γ(H) is found at the reorientational transition HR for fields applied along the b hard axis, which we argue occurs when the field-induced moment is of the same size as the zero-field ordered moment M0. Fields applied along the easy direction, on the other hand, lead to a rapid suppression of γ(H). We emphasize that this behavior is also applicable to the closely related ferromagnetic superconductors UCoGe and UGe2 and discuss implications for the field-induced/enhanced superconductivity in these materials.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2011 May 5|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics