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Experimental Evidence for Correlated Hopping in Two Dimensions
Author(s) -
Van Keuls F. W.,
Dahm A. J.
Publication year - 1998
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199801)205:1<21::aid-pssb21>3.0.co;2-#
Subject(s) - psychology
The ratio C 2 /β, where C and β are constants associated with variable‐range hopping, is determined by requiring a smooth variation of the localization length with density in the transition region from ES hopping to screened Mott hopping. A reduction of the ratio C 2 /β from the single‐particle hopping value is presented as evidence for correlated hopping in two dimensions.