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18 January 2022
 
  » arxiv » cond-mat/0001431

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The g-factors of discrete levels in nanoparticles
K.A. Matveev ; L.I. Glazman ; A.I. Larkin ;
Date 29 Dec 1999
Subject Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall
AbstractSpin-orbit scattering suppresses Zeeman splitting of individual energy levels in small metal particles. This suppression becomes significant when the spin-orbit scattering rate au_{so}^{-1} is comparable with the quantum level spacing delta. The g-factor exhibits mesoscopic fluctuations; at small delta au_{so} it is distributed according to the Maxwell distribution. At delta au_{so} o 0 the average g-factor levels off at a small value gsim(l/L)^{1/2} given by the ratio of the electron mean free path l to the particle size L. On the contrary, in 2D quantum dots the g-factor is strongly enhanced by spin-orbit coupling.
Source arXiv, cond-mat/0001431
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