Stoner-Wohlfart model applied to bicrystal magnetoresistance hysteresis

Details Stoner-Wohlfart model applied to bicrystal magnetoresistance hysteresis Stoner-Wohlfart model applied to bicrystal magnetoresistance hysteresis

2004-04-08

arxiv.org/abs/cond-mat/0404193v1

Physics

Condensed Matter

Materials Science

5 pages, 4 figures

Scientific paper

10.1063/1.1753083

We calculate numerically the magnetization direction as function of magnetic field in the Stoner-Wohlfart theory and are able to reproduce the shape of the low-field magnetoresistance hysteresis observed in manganite grain boundary junctions. Moreover, we show that it is necessary to include biaxial magnetocrystalline anisotropy to fully describe the grain boundary magnetoresistance in La$_{0.7}$Sr$_{0.3}$MnO$_3$/SrTiO$_3$ bicrystal tunnel junctions.

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