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Hamiltonian theory of the strongly-coupled limit of the Kondo problem in the overscreened case

Domenico Giuliano·Arturo Tagliacozzo
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Abstract

By properly generalizing Nozie`res' Fermi liquid theory, we construct an Hamiltonian approach to the scattering of conduction electrons off a spin-1/2 impurity in the ovescreneed Kondo regime, as T -> 0. We derive the S-matrix at the interacting fixed point, and the corresponding phase shifts, together with leading energy corrections to the unitary limit. We apply our results to obtain the low-temperature dependence of the 2-channel Kondo conductance, and we relate it to possible transport experiments in a Quantum Dot

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Domenico Giuliano, Arturo Tagliacozzo. 2004-07-23. Hamiltonian theory of the strongly-coupled limit of the Kondo problem in the overscreened case. https://doi.org/10.1088/0953-8984%2F16%2F34%2F008

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