Intrinsic Bistability of Coupled Quantum Wires: Localization due to Many-Body Effects

• Totsuji Hiroo

• Tachibana Hiroyuki

• Hashimoto Seiji

• Nara Shigetoshi

抄録

The ground state of a system of electrons accumulated in a pair of coupled symmetric quantum wires is analyzed on the basis of density functional theory. It is shown that, in a domain of physical parameters, electrons are localized in either of wires. The main contribution to the total energy of this system comes from the Hartree energy, or the electrostatic energy, and the exchange-correlation energy between electrons. The ground state is determined by a competition between these contributions: We have symmetric electron distributions when the Hartree energy dominates and asymmetric (localized) states are realized in the opposite case. This kind of simple system with bistable electronic states may be applied to semiconductor memory devices.

収録刊行物

• Memoirs of the Faculty of Engineering, Okayama University

  Memoirs of the Faculty of Engineering, Okayama University 27 (1), 55-64, 1992-11-25

  Faculty of Engineering, Okayama University

詳細情報

• CRID: 1390572174531437824
• NII論文ID: 120002307892
• NII書誌ID: AA10699856
• ISSN: 04750071
• DOI: 10.18926/15394
• Web Site: https://ousar.lib.okayama-u.ac.jp/15394
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • CiNii Articles