Kainz, Josef and Mikhailov, S. and Wensauer, Andreas and Rössler, Ulrich (2002) Groundstate energies of quantum dots in high magnetic fields: A new approach. Physica E 12 (1-4), pp. 888-891.
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We present a method for calculating ground state properties of quantum dots in high magnetic fields which takes into account the equilibrium positions of electrons in a Wigner cluster to minimize the interaction energy and is optimized for the high field limit. Assuming perfect spin alignment the many-body trial function is a single Slater determinant of overlapping oscillator functions from the lowest Landau level centered at and near the classical equilibrium positions. We obtain an analytic expression for the ground state energy and present numerical results for up to N=40.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|Keywords:||Quantum dot; Ground state; High magnetic field; Wigner cluster|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:55|