MAGNETIC-FIELD DEPENDENCE OF THE LOCALIZATION LENGTH ON THE DIELECTRIC SIDE OF METAL-INSULATOR TRANSITIONS

Authors
SPIVAK B ZHAO HL FENG SC
Citation
B. Spivak et al., MAGNETIC-FIELD DEPENDENCE OF THE LOCALIZATION LENGTH ON THE DIELECTRIC SIDE OF METAL-INSULATOR TRANSITIONS, JETP letters, 59(9), 1994, pp. 628-634
Citations number
17
Categorie Soggetti
Physics
Journal title
JETP letters → ACNP
ISSN journal
00213640
Volume
59
Issue
9
Year of publication
1994
Pages
628 - 634
Database
ISI
SICI code
0021-3640(1994)59:9<628:MDOTLL>2.0.ZU;2-8
Abstract
Magnetic field dependence of negative magnetoresistance (MR) in variab le-range-hopping conduction is discussed. Above four dimensions, the n egative MR saturates at large magnetic fields. In dimensions lower tha n four, the negative MR corresponds to a field-dependent correction to the localization length. A qualitative coarse-graining picture is pre sented for such behavior.