Vortex Clusters in Quantum Dots

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2004-09-07
Major/Subject
Mcode
Degree programme
Language
en
Pages
4
1-4
Series
Physical Review Letters, Volume 93, issue 11
Abstract
We study electronic structures of two-dimensional quantum dots in strong magnetic fields using mean-field density-functional theory and exact diagonalization. Our numerically accurate mean-field solutions show a reconstruction of the uniform-density electron droplet when the magnetic field flux quanta enter one by one the dot in stronger fields. These quanta correspond to repelling vortices forming polygonal clusters inside the dot. We find similar structures in the exact treatment of the problem by constructing a conditional operator for the analysis. We discuss important differences and limitations of the methods used.
Description
Keywords
density-functional, exact diagonalization, quantum dot, vortex
Other note
Citation
Saarikoski , H , Harju , A , Puska , M J & Nieminen , R M 2004 , ' Vortex Clusters in Quantum Dots ' , Physical Review Letters , vol. 93 , no. 11 , 116802 , pp. 1-4 . https://doi.org/10.1103/PhysRevLett.93.116802