Abstract:
Recently it was demonstrated that the rotational and vibrational spectra of quantum rings containing few electrons can be described quantitatively by an effective spin-Hamiltonian combined with rigid center-of-mass rotation and internal vibrations of localized electrons. We use this model Hamiltonian to study the quantum rings at finite temperatures and in presence of a nonzero magnetic field. Total spin, angular momentum and pair correlation show similar phase diagram which can be understood with help of the rotational spectrum of the ring.
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Received 18 January 2002 Published online 13 August 2002
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Koskinen, P., Koskinen, M. & Manninen, M. Low-energy spectrum and finite temperature properties of quantum rings. Eur. Phys. J. B 28, 483–489 (2002). https://doi.org/10.1140/epjb/e2002-00251-5
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DOI: https://doi.org/10.1140/epjb/e2002-00251-5