Rectangular quantum dots in high magnetic fields

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2004
Major/Subject
Mcode
Degree programme
Language
en
Pages
165309/1-5
Series
Physical Review B, Volume 69, Issue 16
Abstract
We use density-functional methods to study the effects of an external magnetic field on two-dimensional quantum dots with a rectangular hard-wall confining potential. The increasing magnetic field leads to spin polarization and formation of a highly inhomogeneous maximum-density droplet at the predicted magnetic-field strength. At higher fields, we find an oscillating behavior in the electron density and in the magnetization of the dot. We identify a rich variety of phenomena behind the periodicity and analyze the complicated many-electron dynamics, which is shown to be highly dependent on the shape of the quantum dot.
Description
Keywords
quantum dots, maximum-density droplet, magnetic fields, magnetization
Other note
Citation
Räsänen, E. & Harju, A. & Puska, M. J. & Nieminen, Risto M. 2004. Rectangular quantum dots in high magnetic fields. Physical Review B. Volume 69, Issue 16. 165309/1-5. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.69.165309.