TY - JOUR
T1 - Spin-orbit scattering for localized electrons
T2 - Absence of negative magnetoconductance
AU - Meir, Yigal
AU - Wingreen, Ned S.
AU - Entin-Wohlman, Ora
AU - Altshuler, Boris L.
PY - 1991
Y1 - 1991
N2 - The distribution of hopping conductances in the strongly localized regime in the presence of both a magnetic field and spin-orbit (SO) scattering is calculated via an analytic independent-directed-path formalism, and a locator expansion which includes all correlations between paths. Both methods lead to a positive magnetoconductance for all strengths of SO scattering, contrary to recent random-matrix theory predictions. Extensive numerical simulations demonstrate that the crossover from negative to positive magnetoconductance occurs as the system size exceeds the localization length.
AB - The distribution of hopping conductances in the strongly localized regime in the presence of both a magnetic field and spin-orbit (SO) scattering is calculated via an analytic independent-directed-path formalism, and a locator expansion which includes all correlations between paths. Both methods lead to a positive magnetoconductance for all strengths of SO scattering, contrary to recent random-matrix theory predictions. Extensive numerical simulations demonstrate that the crossover from negative to positive magnetoconductance occurs as the system size exceeds the localization length.
UR - http://www.scopus.com/inward/record.url?scp=3342886405&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.66.1517
DO - 10.1103/PhysRevLett.66.1517
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AN - SCOPUS:3342886405
SN - 0031-9007
VL - 66
SP - 1517
EP - 1520
JO - Physical Review Letters
JF - Physical Review Letters
IS - 11
ER -