Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-07-27
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 7 figures
Scientific paper
10.1103/PhysRevB.71.075111
A model for semimetals such as $EuB_6$, 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 $EuB_6$. 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.
Lin Chungwei
Millis Andrew. J.
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