TY - JOUR
T1 - Absence of spin diffusion in most random lattices
AU - Bhatt, R. N.
AU - Fisher, Daniel S.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1992
Y1 - 1992
N2 - We examine the metallic phase of the positionally disordered Anderson-Hubbard model as a prototype of a strongly correlated disordered metal. We find that the low-temperature thermodynamics is dominated by spin excitations in rare regions, leading to non-Fermi-liquid behavior as T0 with a diverging susceptibility, a specific heat rising faster than T, and a vanishing spin diffusion coefficient. We argue that the results should, in principle, apply throughout the metallic phase of random alloys which undergo a transition, as a function of concentration, to an insulating phase with local moments.
AB - We examine the metallic phase of the positionally disordered Anderson-Hubbard model as a prototype of a strongly correlated disordered metal. We find that the low-temperature thermodynamics is dominated by spin excitations in rare regions, leading to non-Fermi-liquid behavior as T0 with a diverging susceptibility, a specific heat rising faster than T, and a vanishing spin diffusion coefficient. We argue that the results should, in principle, apply throughout the metallic phase of random alloys which undergo a transition, as a function of concentration, to an insulating phase with local moments.
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U2 - 10.1103/PhysRevLett.68.3072
DO - 10.1103/PhysRevLett.68.3072
M3 - Article
C2 - 10045600
AN - SCOPUS:0001110482
SN - 0031-9007
VL - 68
SP - 3072
EP - 3075
JO - Physical review letters
JF - Physical review letters
IS - 20
ER -