Dynamical Mean Field Theory of Temperature and Field Dependent Band Shifts in Magnetically Coupled Semimetals: Applocation to EuB6

Abstract

A model for semimetals such as $Eu{B}_6$, in which band overlaps are controlled by magnetic order, is presented and is solved in the dynamical mean field approximation. First order phase boundaries are computed by evaluating free energies of different states. The phase diagram is determined. A specific and physically reasonable choice of parameters is found to approximately reproduce the available data on $Eu{B}_6$. For this material, predictions are made for the location of a metamagnetic transition and its associated endpoint, and a change in the order of the magnetic transition.

6 pages, 7 figures

References in corpus (2)

• Kondo and anti-Kondo coupling to local moments in EuB${}_6$
• Dynamical mean field theory for transition temperature and optics of CMR manganites

Cited by in corpus (4)

• Magnetic semimetals and quantized anomalous Hall effect in EuB6
• Electronic properties of EuB6 in the ferromagnetic regime: Half-metal versus semiconductor
• Magneto-optical evidence of double exchange in a percolating lattice
• Magneto-optical behaviour of EuIn_2P_2