Tunable Kondo physics in a carbon nanotube double quantum dot
arXiv:1209.3735 · doi:10.1103/PhysRevLett.109.156804
Abstract
We investigate a tunable two-impurity Kondo system in a strongly correlated carbon nanotube double quantum dot, accessing the full range of charge regimes. In the regime where both dots contain an unpaired electron, the system approaches the two-impurity Kondo model. At zero magnetic field the interdot coupling disrupts the Kondo physics and a local singlet state arises, but we are able to tune the crossover to a Kondo screened phase by application of a magnetic field. All results show good agreement with a numerical renormalization group study of the device.
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Cited by in corpus (24)
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- Universal Fermi liquid crossover and quantum criticality in a mesoscopic device
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- Double quantum dot as a minimal thermoelectric generator
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