Theoretical study on electron dynamics for a two-dimensional electron gas coupled with a quantum dot

Masakazu Muraguchi, Yukihiro Takada, Shintaro Nomura, Kenji Shiraishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We studied the time evolutions of the electronic states on a quantum wire (QW) and a two-dimensional electron gas (2DEG), which are suddenly coupled with a discrete level. We employed the tight-binding model to represent these systems, and calculate the time evolutions of the wave functions by solving the time-dependent (TD) Schrödinger equation numerically. The resulting time evolutions indicate that the characteristics of the electron density distributions on both the QW and the 2DEG sensitively depend on the energy level of the discrete level. We found that the modulation of the electron density distribution is enhanced in the QW-QD coupled system.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 29th International Conference, ICPS 29
Pages217-218
Number of pages2
DOIs
Publication statusPublished - 2009 Dec 1
Event29th International Conference on Physics of Semiconductors, ICPS 29 - Rio de Janeiro, Brazil
Duration: 2008 Jul 272008 Aug 1

Publication series

NameAIP Conference Proceedings
Volume1199
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other29th International Conference on Physics of Semiconductors, ICPS 29
CountryBrazil
CityRio de Janeiro
Period08/7/2708/8/1

Keywords

  • Quantum dot
  • Quantum dynamics
  • Quantum wire
  • Two-dimensional electron gas

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Theoretical study on electron dynamics for a two-dimensional electron gas coupled with a quantum dot'. Together they form a unique fingerprint.

Cite this