Effects of finite temperature in ballistic quantum dots

M.O. Terra and M.A.M. Aguiar

Physica A: Statistical Mechanics and its Applications, 1998, vol. 257, issue 1, 542-546

Abstract: We studied the effects of finite temperature in the magnetic susceptibility of a system of N non-interacting electrons in a homogeneous magnetic field and in a smooth confinement potential: the two-dimensional harmonic oscillator. Different exact ensemble calculations are considered and discussed: canonical (N fixed), canonical via grand-canonical (N average fixed) and partial canonical ensembles. We compute a Gaussian average of the susceptibility over the number of particles and another one over the size of system in order to compare our results with data of mesoscopic systems experiments. We conclude that it is fundamental to consider interactions between the particles in the theoretical analysis to obtain the temperature dependence of the experimental results.

Keywords: Quantum chaos; Mesoscopic systems; Electron gas; Dynamical systems; Temperature effects (search for similar items in EconPapers)
Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:257:y:1998:i:1:p:542-546

DOI: 10.1016/S0378-4371(98)00190-3

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