Density-functional theory of quantum dots in the high magnetic field limit

T. H. Stoof, G. E.W. Bauer

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We study the competition between the exchange and the direct Coulomb interaction near the edge of a quantum dot in a strong magnetic field using the density-functional theory in a local approximation for the exchange-energy functional. We develop a scheme in which it is possible to describe fractional filling in the extreme quantum limit. Exchange plays a significant role in reducing the spatial extent of the compressible edge channel regions obtained from an electrostatic description. The transition from narrow incompressible edge channels to broad compressible strips occurs within a narrow and experimentally accessible range of confinement strengths.

本文言語English
ページ(範囲)349-352
ページ数4
ジャーナルSolid-State Electronics
40
1-8
DOI
出版ステータスPublished - 1996
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学
  • 材料化学

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