このエントリーをはてなブックマークに追加
ID 15394
Eprint ID
15394
フルテキストURL
著者
東辻 浩夫 Department of Electrical and Electronic Engineering
Tachibana Hiroyuki Department of Electrical and Electronic Engineering
Hashimoto Seiji Department of Electrical and Electronic Engineering
奈良 重俊 Department of Electrical and Electronic Engineering
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.
発行日
1992-11-25
出版物タイトル
Memoirs of the Faculty of Engineering, Okayama University
出版物タイトル(別表記)
岡山大学工学部紀要
27巻
1号
出版者
Faculty of Engineering, Okayama University
出版者(別表記)
岡山大学工学部
開始ページ
55
終了ページ
64
ISSN
0475-0071
NCID
AA10699856
資料タイプ
紀要論文
言語
English
論文のバージョン
publisher
査読
無し
Eprints Journal Name
mfe