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, 77 (23).
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://link.aps.org/doi/10.1103/PhysRevB.77.235301
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.
|Subjects:||Physical Science > Nanophysics|
Material Science > Functional and hybrid materials
Physical Science > Nano objects
|Deposited On:||20 Jan 2009 16:32|
|Last Modified:||29 Jan 2009 14:47|
Repository Staff Only: item control page