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Tunable Kondo physics in a carbon nanotube double quantum dot.

Chorley, SJ; Galpin, MR; Jayatilaka, FW; Smith, CG; Logan, DE; Buitelaar, MR; (2012) Tunable Kondo physics in a carbon nanotube double quantum dot. Physical Review Letters , 109 (15) , Article 156804. 10.1103/PhysRevLett.109.156804. Green open access

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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.

Type: Article
Title: Tunable Kondo physics in a carbon nanotube double quantum dot.
Location: US
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.109.156804
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.109.156804
Language: English
Additional information: © 2012 American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1366976
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