Semiclassical electronic transport in MnAs thin film

CHRISTIAN HELMAN, J.MILANO, L.STEREN AND A.M.LLOIS

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Elsevier

Año: 2008 vol. 320 p. 415 - 417

0304-8853

Magneto-transport experiments have been recently performed on MnAs thin films. Hall effect and transverse magnetoresistance measurements have shown interesting and, until now, unknown results. For instance, the transverse magnetoresistance shows no saturation in the presence of very high magnetic fields. In order to understand the contribution of the electronic band structure to the non-saturating magnetoresistance, we perform ab initio calculations, using the Wien2K code and analyze the magneto-transport properties within the semiclassical approximation. We show that non-saturation may be due to the presence of open orbits on the majority Fermi surface. Keywords: Magnetotransport; Fermi surface; Open orbits