Large longitudinal magnetoresistance of multivalley systems

Abstract

The longitudinal magnetoresistance (MR) is assumed to be hardly realized as the Lorentz force does not work on electrons when the magnetic field is parallel to the current. However, in some cases, longitudinal MR becomes large, which exceeds the transverse MR. To solve this problem, we have investigated the longitudinal MR considering multivalley contributions based on the classical MR theory. We have showed that the large longitudinal MR is caused by off-diagonal components of a mobility tensor. Our theoretical results agree with the experiments of large longitudinal MR in IV-VI semiconductors, especially in PbTe, for a wide range of temperatures, except for linear MR at low temperatures.

8 pages, 5 figures

References in corpus (3)

• Linear magnetoresistance caused by mobility fluctuations in the n-doped Cd3As2
• Angle dependence of the orbital magnetoresistance in bismuth
• Longitudinal and transverse magnetoresistance of SrTiO${}_3$ with a single closed Fermi surface

Cited by in corpus (4)

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• Classical transport theory for the planar Hall effect with threefold symmetry