Half-magnetization plateaux in Cr spinels

Details Half-magnetization plateaux in Cr spinels Half-magnetization plateaux in Cr spinels

2006-09-19

arxiv.org/abs/cond-mat/0609470v1

J. Phys: Conf. Series 51, 31 (2007).

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages latex using IOP macros, from review talk given at RHMF 2006 (Sendai)

Scientific paper

10.1088/1742-6596/51/1/005

Magnetization plateaux, visible as anomalies in magnetic susceptibility at low temperatures, are one of the hallmarks of frustrated magnetism. An extremely robust half-magnetization plateau is observed in the spinel oxides CdCr2O4 and HgCr2O4, where it is accompanied by a substantial lattice distortion. We give an overview of the present state experiment for CdCr2O4 and HgCr2O4, and show how such a half-magnetization plateau arises quite naturally in a simple model of these systems, once coupling to the lattice is taken into account.

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