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Article Dans Une Revue Physical Review Letters Année : 2011

Giant Charge Relaxation Resistance in the Anderson Model

Karyn Le Hur
Christophe Mora
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Résumé

We investigate the dynamical charge response of the Anderson model viewed as a quantum RC circuit. Applying a low-energy effective Fermi liquid theory, a generalized Korringa-Shiba formula is derived at zero temperature, and the charge relaxation resistance is expressed solely in terms of static susceptibilities which are accessible by Bethe ansatz. We identify a giant charge relaxation resistance at intermediate magnetic fields related to the destruction of the Kondo singlet. The scaling properties of this peak are computed analytically in the Kondo regime. We also show that the resistance peak fades away at the particle-hole symmetric point.

Dates et versions

hal-00659658 , version 1 (13-01-2012)

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Michele Filippone, Karyn Le Hur, Christophe Mora. Giant Charge Relaxation Resistance in the Anderson Model. Physical Review Letters, 2011, 107 (17), pp.176601. ⟨10.1103/PhysRevLett.107.176601⟩. ⟨hal-00659658⟩
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