Crossover from Anderson- to Kondo-like behavior: Universality induced by spin-charge separation

Details Crossover from Anderson- to Kondo-like behavior: Universality induced by spin-charge separation Crossover from Anderson- to Kondo-like behavior: Universality induced by spin-charge separation

2005-05-23

arxiv.org/abs/cond-mat/0505570v1

Phys. Rev. B 71 (2005) 144421

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, 5 figures

Scientific paper

10.1103/PhysRevB.71.144421

The thermodynamics of a lattice regularized asymmetric Anderson impurity in a correlated host is obtained by an exact solution. The crossover from the Anderson- to the Kondo-regime is studied, thus making contact with predictions by scaling theory. On the basis of the exact solution, the transition to universal Kondo behavior is shown to be realized by a graduate separation of the energy scales of spin and charge excitations.

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