Antisymmetric magnetoresistance of the SrTiO3/LaAlO3 interface

Details Antisymmetric magnetoresistance of the SrTiO3/LaAlO3 interface Antisymmetric magnetoresistance of the SrTiO3/LaAlO3 interface

2009-11-15

arxiv.org/abs/0911.2857v1

Phys. Rev. B 80, 180410(R) (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.80.180410

The longitudinal resistance $R_{xx}$ of the SrTiO3/LaAlO3 interface with magnetic fields applied perpendicular to the interface has an antisymmetric term (namely, $R_{xx}(H)\neq R_{xx}(-H)$) which increases with decreasing temperature and increasing field. We argue that the origin of this phenomenon is a non-homogeneous Hall effect with clear contribution of an extraordinary Hall effect, suggesting the presence of non-uniform field-induced magnetization.

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