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Spin-orbit interaction and anomalous spin relaxation in carbon nanotube quantum dots

Bulaev, Denis V. and Trauzettel, Bjoern and Loss, Daniel. (2008) Spin-orbit interaction and anomalous spin relaxation in carbon nanotube quantum dots. Physical Review B, Vol. 77, H. 23 , 235301, 13 S..

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Official URL: http://edoc.unibas.ch/dok/A5254607

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Abstract

We study spin relaxation and decoherence in nanotube quantum dots caused by electron-lattice and spin-orbit interaction and predict striking effects induced by magnetic fields B. For particular values of B, destructive interference occurs resulting in ultralong spin relaxation times T-1 exceeding tens of seconds. For small phonon frequencies omega, we find a 1/root omega spin-phonon noise spectrum-a dissipation channel for spins in quantum dots-which can reduce T-1 by many orders of magnitude. We show that nanotubes exhibit zero-field level splitting caused by spin-orbit interaction. This enables an all-electrical and phase-coherent control of spin.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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