Electronic States and Transport Phenomena in Quantum Dot Systems

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Electronic states and transport phenomena in semiconductor quantum dots are studied theoretically. Taking account of the electron-electron Coulomb interaction by the exact diagonalization method, the ground state and low-lying excited states are calculated as functions of magnetic field. Using the obtained many-body states, we discuss the temperature dependence of the conductance peaks in the Coulomb oscillation. In the Coulomb blockade region, elastic and inelastic cotunneling currents are evaluated under finite bias voltages. The cotunneling conductance is markedly enhanced by the Kondo effect. In coupled quantum dots, molecular Orbitals and electronic correlation influence the transport properties.

Original languageEnglish
Pages (from-to)1929-1935
Number of pages7
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number3 B
Publication statusPublished - 2001


  • Artificial atom
  • Cotunneling
  • Coulomb blockade
  • Coulomb oscillation
  • Electronic correlation
  • Exact diagonalization
  • Kondo effect
  • Quantum dot

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


Dive into the research topics of 'Electronic States and Transport Phenomena in Quantum Dot Systems'. Together they form a unique fingerprint.

Cite this