Importance of the electronic state on the electrode in electron tunneling processes between the electrode and the quantum dot

Masakazu Muraguchi, Yukihiro Takada, Shintaro Nomura, Tetsuo Endoh, Kenji Shiraishi

Research output: Contribution to journalArticlepeer-review

Abstract

We have revealed that the electronic states in the electrodes give a significant influence to the electron transport in nanoelectronic devices. We have theoretically investigated the time-evolution of electron transport from a two-dimensional electron gas (2DEG) to a quantum dot (QD), where 2DEG represents the electrode in the nano-electronic devices. We clearly showed that the coherent electron transport is remarkably modified depending on the initial electronic state in the 2DEG. The electron transport from the 2DEG to the QD is strongly enhanced, when the initial state of the electron in the 2DEG is localized below the QD.We have proposed that controlling the electronic state in the electrodes could realize a new concept device function without modifying the electrode structures; that achieves a new controllable state in future nano-electronic devices.

Original languageEnglish
Pages (from-to)563-568
Number of pages6
JournalIEICE Transactions on Electronics
VolumeE93-C
Issue number5
DOIs
Publication statusPublished - 2010 Jan 1

Keywords

  • Direct tunneling
  • Electron dynamics
  • Electron transport
  • Quantum dot
  • Two-dimensional electron gas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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