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 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.
Original language | English (US) |
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Pages (from-to) | 3072-3075 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 68 |
Issue number | 20 |
DOIs | |
State | Published - Jan 1 1992 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)