Dephasing processes in transport through two-level quantum dot

Y. Funabashi, K. Ohtsubo, M. Eto, K. Kawamura

研究成果: Article

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Transport properties through a two-level quantum dot are studied using the Anderson Hamiltonian. Like the spin degeneracy, the orbital degrees of freedom in the quantum dot cause the Kondo effect and dephasing of conduction electrons transported through the dot. One feature of the model is the mixing oforbital states in the dot which occurs even if the Coulomb interaction is absent. This mixing deforms the density of states in the dot and suppresses the increment of the current caused by the Kondo effect. The dephasing processes are enhanced when the bias voltage is increased, but are insensitive to the mixing effect.

元の言語English
ページ(範囲)1367-1371
ページ数5
ジャーナルSolid-State Electronics
42
発行部数7-8
DOI
出版物ステータスPublished - 1998 1 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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