Semiclassical electronic transport in MnAs thin films

C. HELMAN, J. MILANO, L. STEREN, A.M. LLOIS

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ELSEVIER SCIENCE BV

Año: 2008 vol. 320 p. 415 - 417

0304-8853

Magneto-transport experiments have been recently performed on MnAs thin films. Hall effect and transverse magnetoresistancemeasurements have shown interesting and, until now, unknown results. For instance, the transverse magnetoresistance shows nosaturation 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 initiocalculations, using the Wien2K code and analyze the magneto-transport properties within the semiclassical approximation. We show thatnon-saturation may be due to the presence of open orbits on the majority Fermi surface.