Numerical studies of transport properties through artificial atoms and molecules

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Transport properties are studied numerically through a quantum dot in which one-electron level spacings are comparable with the Coulomb interaction energy. Many-body ground state and excited states are obtained by the exact diagonalization method. An atomic-like shell structure of energy levels is reflected in peak positions of the Coulomb oscillation, whereas almost degenerate levels in a shell cause anomalous temperature dependence of some peak heights. When such artificial atoms are coupled like a molecule, the electronic correlation makes the Heitler-London wavefunction in which electrons are localized to be apart from each other. This correlation effect influences the peak heights of the Coulomb oscillation through the artificial molecule.

Original languageEnglish
Pages (from-to)1373-1377
Number of pages5
JournalSolid-State Electronics
Volume42
Issue number7-8
Publication statusPublished - 1998 Jul

Fingerprint

Transport properties
transport properties
Atoms
Molecules
Electrons
Wave functions
Coulomb interactions
Excited states
Electron energy levels
Ground state
Semiconductor quantum dots
atoms
molecules
oscillations
electrons
energy levels
quantum dots
spacing
temperature dependence
ground state

ASJC Scopus subject areas

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

Cite this

Numerical studies of transport properties through artificial atoms and molecules. / Eto, Mikio.

In: Solid-State Electronics, Vol. 42, No. 7-8, 07.1998, p. 1373-1377.

Research output: Contribution to journalArticle

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