Non-analytic behavior of 2D itinerant ferromagnets

Abstract

We consider an ordered ferromagnet in the vicinity of a T=0 transition into a paramagnet. We show that the free energy and the transverse and longitudinal static susceptibilities contain non-analyticities which destroy a continuous second-order transition. Depending on the parameters, the transition either becomes first-order, or occurs via an intermediate spiral phase.

4 pages, 3 figures

References in corpus (2)

• Quantum critical behavior in itinerant electron systems -- Eliashberg theory and instability of a ferromagnetic quantum-critical point
• Metallic State in Cubic FeGe beyond its Quantum Phase Transition

Cited by in corpus (1)

• Nonanalytic paramagnetic response of itinerant fermions away and near a ferromagnetic quantum phase transition