Europhys. Lett, 33 (6), pp. 471-476 (1996)

Universal spin-induced magnetoresistance in the variable-range hopping regime

Y. Meir

Physics Department, Ben Gurion University - Beer Sheva 84105, Israel

(received 11 September 1995; accepted in final form 3 January 1996)

PACS. 72.20My - Galvanomagnetic and other magnetotransport effects.
PACS. 72.20-i - Conductivity phenomena in semiconductors and insulators.
PACS. 73.50Jt - Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects).


The magnetoresistance in the variable-range hopping regime due to Zeeman spin-splitting and intra-impurity interactions is calculated analytically and shown to be a universal function of . Good agreement with numerical calculations in one and two dimensions is observed. With the inclusion of quantum interference effects, excellent agreement with recent experiments is obtained.

Full Text:

Published version: PDF (1026 kB) PostScript (1422 kB) (locally) or directly from epl: PDF

Copyright EDP Sciences