Two-channel Kondo physics in two-impurity Kondo models.

Two-channel Kondo physics in two-impurity Kondo models.

We consider the non-Fermi-liquid quantum critical state of the spin-S two-impurity Kondo model and its potential realization in a quantum dot device. Using conformal field theory and the numerical renormalization group, we show the critical point to be identical to that of the two-channel Kondo mode...

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Մատենագիտական մանրամասներ
Հիմնական հեղինակներ: Mitchell, A, Sela, E, Logan, D
Ձևաչափ: Journal article
Լեզու:English
Հրապարակվել է: 2012
Նկարագրություն
Ամփոփում:We consider the non-Fermi-liquid quantum critical state of the spin-S two-impurity Kondo model and its potential realization in a quantum dot device. Using conformal field theory and the numerical renormalization group, we show the critical point to be identical to that of the two-channel Kondo model with additional potential scattering, for any spin S. Distinct conductance signatures are shown to arise as a function of device asymmetry, with the square-root behavior commonly believed to arise at low-energies dominant only in certain regimes.

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