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

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dc.creatorBulaev, Denis V.
dc.creatorTrauzettel, Bjoern
dc.creatorLoss, Daniel
dc.date2007-12-21
dc.date2008-06-04
dc.date.accessioned2026-07-07T09:42:19Z
dc.date.available2026-07-07T09:42:19Z
dc.descriptionWe study spin relaxation and decoherence 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 $ω$, we find a $1/\sqrtω$ spin-phonon noise spectrum -- a novel 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.
dc.description19 pages, 12 figures
dc.identifierhttps://arxiv.org/abs/0712.3767
dc.identifierhttp://arxiv.org/abs/0712.3767
dc.identifierPhys. Rev. B 77, 235301 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.235301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162138
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpin-orbit interaction and anomalous spin relaxation in carbon nanotube quantum dots
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