Abstract
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 T\ensuremath{\rightarrow}0 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.
Keywords
Condensed matter physicsDiffusionSpin (aerodynamics)Spin diffusionPhase (matter)PhysicsFermi Gamma-ray Space TelescopeFermi liquid theoryMaterials scienceMetalThermodynamicsQuantum mechanicsSuperconductivity
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Publication Info
- Year
- 1992
- Type
- article
- Volume
- 68
- Issue
- 20
- Pages
- 3072-3075
- Citations
- 145
- Access
- Closed
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Cite This
R. N. Bhatt,
Daniel S. Fisher
(1992).
Absence of spin diffusion in most random lattices.
Physical Review Letters
, 68
(20)
, 3072-3075.
https://doi.org/10.1103/physrevlett.68.3072
Identifiers
- DOI
- 10.1103/physrevlett.68.3072