Anomalous Hall effect in two-phase semiconductor structures: The role of ferromagnetic inclusions

作者：Kudrin A V^*; Shvetsov A V; Danilov Yu A; Timopheev A A; Pavlov D A; Bobrov A I; Malekhonova N V; Sobolev N A

来源：Physical Review B, 2014, 90(2): 024415.

DOI：10.1103/PhysRevB.90.024415

The Hall effect in InMnAs layers with MnAs inclusions of 20-50 nm in size is studied both theoretically and experimentally. We find that the anomalous Hall effect can be explained by the Lorentz force caused by the magnetic field of ferromagnetic inclusions and by an inhomogeneous distribution of the current density in the layer. The hysteretic dependence of the average magnetization of ferromagnetic inclusions on an external magnetic field results in a hysteretic dependence of R-H(H-ext). Thus, we show the possibility of a hysteretic R-H(H-ext) dependence (i.e., observation of the anomalous Hall effect) in thin conductive layers with ferromagnetic inclusions in the absence of carriers%26apos; spin polarization.

• 出版日期2014-7-21