Issue |
Europhys. Lett.
Volume 43, Number 4, August II 1998
|
|
---|---|---|
Page(s) | 427 - 432 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1998-00376-7 | |
Published online | 01 September 2002 |
Effects of spin-orbit scattering on the magnetoconductance in variable-range hopping
Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315, USA
Received:
30
March
1998
Accepted:
23
June
1998
We analytically study the effect of spin-orbit (SO) scattering on the hopping transport of strongly localized electrons in a magnetic field. Closed-form results for the magnetoconductance (MC) in the limit of strong SO scattering are derived for quasi-1D and 2D systems. The MC is positive with reduced magnitude and identical periodicity compared to that without SO scattering. Moreover, we provide a simple formula for the field strength that first saturates the MC. The MC for 3D systems in a weak magnetic field of arbitrary orientations is also obtained analytically, which shows MC anisotropy and thus enables us to determine the direction of the critical hop.
PACS: 72.20.My – Galvanomagnetic and other magnetotransport effects / 72.20.-i – Conductivity phenomena in semiconductors and insulators
© EDP Sciences, 1998
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