Shell structure of a circular quantum dot in weak magnetic fields

Reimann, S. M. and Persson, M. and Lindelof, P. E. and Brack, Matthias (1996) Shell structure of a circular quantum dot in weak magnetic fields. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 101 (3). pp. 377-385. ISSN 0722-3277

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Abstract

The conductance of a circular quantum dot in a two-dimensional electron gas of a GaAlAs/GaAs heterostructure has been measured. Conductance oscillations as functions both of the magnetic field B and of the size of a dot confining about 1000 electrons are related to the formation of electronic shell structure. Modeling the dot by a circular billiard, we interpret the results semiclassically in terms of periodic orbit theory, providing a simple explanation of the B-periodic oscillations. A comparison to a harmonic confinement suitable for smaller quantum dots is given.

Item Type: Article
Uncontrolled Keywords: SEMICLASSICAL TRACE FORMULAS; ELECTRON-GAS; PERIODIC-ORBITS; METAL-CLUSTERS; STATES; OSCILLATIONS; DENSITY; SUPERLATTICES; SUPERSHELLS; SCATTERING
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 21 Jun 2023 10:15
Last Modified: 21 Jun 2023 10:15
URI: https://pred.uni-regensburg.de/id/eprint/51406

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