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Valleys in Configuration Space of Coulomb Glasses
Author(s) -
PérezGarrido A.,
Ortuño M.,
Somoza A.M.,
DíazSánchez A.
Publication year - 2000
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(200003)218:1<25::aid-pssb25>3.0.co;2-8
Subject(s) - coulomb , metastability , range (aeronautics) , electron , stability (learning theory) , space (punctuation) , physics , coulomb's constant , energy (signal processing) , statistical physics , constant (computer programming) , electric potential energy , condensed matter physics , quantum mechanics , materials science , coulomb barrier , computer science , machine learning , programming language , composite material , operating system
We study numerically the effective number of electrons participating in low‐energy transitions in Coulomb glasses comparing the results with those of systems with other types of interactions. Through this study we estimate the number of particles involved in a typical low‐energy transition between configurations. This number increases with system size for long‐range interactions, while it is basically constant for a short‐range interaction. Finally we calculate the density of metastable configurations, i.e. valleys, classified according to their degree of stability.