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29 March 2024
 
  » arxiv » cond-mat/0609726

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Experimental signature of phonon-mediated spin relaxation
T. Meunier ; I. T. Vink ; L. H. Willems van Beveren ; K-J. Tielrooij ; R. Hanson ; F. H. L. Koppens ; H. P. Tranitz ; W. Wegscheider ; L. P. Kouwenhoven ; L. M. K. Vandersypen ;
Date 28 Sep 2006
Subject Other
AbstractWe observe an experimental signature of the role of the phonons in spin relaxation between triplet and singlet states in a two-electron quantum dot. Using both the external magnetic field and the electrostatic confinement potential, we change the singlet-triplet energy splitting from 1.3 meV to zero and observe that the spin relaxation time depends non-monotonously on the energy splitting. A simple theoretical model is derived to capture the underlying physical mechanism. The present experiment confirms that spin-flip energy is dissipated in the phonon bath.
Source arXiv, cond-mat/0609726
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