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Kondo effect in a carbon nanotube with spin-orbit interaction and valley mixing: A DM-NRG study

Mantelli, Davide ; Moca, Catalin Pascu ; Zarand, Gergely ; Grifoni, Milena

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Abstract

We investigate the effects of spin–orbit interaction (SOI) and valley mixing on the transport and dynamical properties of a carbon nanotube (CNT) quantum dot in the Kondo regime. As these perturbations break the pseudo-spin symmetry in the CNT spectrum but preserve time-reversal symmetry, they induce a finite splitting Δ between formerly degenerate Kramers pairs. Correspondingly, a crossover from ...

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