Title
Quantum Dots In Strong Magnetic-Fields - Stability-Criteria For The Maximum Density Droplet
Abbreviated Journal Title
Aust. J. Phys.
Keywords
Oscillations; Conductance; Transport; Physics, Multidisciplinary
Abstract
In this article we discuss the ground state of a parabolically confined quantum dot in the limit of very strong magnetic fields where the electron system is completely spin-polarised and all electrons are in the lowest Landau level. Without electron-electron interactions the ground state is a single Slater determinant corresponding to a droplet centred on the minimum of the confinement potential and occupying the minimum area allowed by the Pauli exclusion principle. Electron-electron interactions favour droplets of larger area. We derive exact criteria for the stability of the maximum density droplet against edge excitations and against the introduction of holes in the interior of the droplet. The possibility of obtaining exact results in the strong magnetic field case is related to important simplifications associated with broken time-reversal symmetry in a strong magnetic field.
Journal Title
Australian Journal of Physics
Volume
46
Issue/Number
3
Publication Date
1-1-1993
Document Type
Article; Proceedings Paper
Language
English
First Page
345
Last Page
358
WOS Identifier
ISSN
0004-9506
Recommended Citation
"Quantum Dots In Strong Magnetic-Fields - Stability-Criteria For The Maximum Density Droplet" (1993). Faculty Bibliography 1990s. 843.
https://stars.library.ucf.edu/facultybib1990/843
Comments
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