Isotropic Approximation to the Magnetoresistance of a Multivalley Semiconductor
Abstract
The magnetoconductivity tensor for a single valley is averaged over all orientations of the valley, giving an isotropic magnetoconductivity tensor. The valley anisotropy can be deduced from the magnetoresistance coefficients of such a model. It is suggested that this model will describe approximately the magnetoresistance phenomena of a polycrystalline multivalley semiconductor. It is also shown that the results of the calculation provide a means for determining the valley anisotropy of a multivalley semiconductor from magnetoresistance data without the use of a detailed model of the band structure.
- Publication:
-
Physical Review
- Pub Date:
- January 1958
- DOI:
- 10.1103/PhysRev.109.43
- Bibcode:
- 1958PhRv..109...43K