Half-magnetization plateaux in Cr spinels
arXiv:cond-mat/0609470 · doi:10.1088/1742-6596/51/1/005
Abstract
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.
8 pages latex using IOP macros, from review talk given at RHMF 2006 (Sendai)