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ID 14061
Eprint ID
14061
フルテキストURL
著者
Miyake Takashi Graduate School of Natural Science and Technology and Faculty of Engineering, Okayama University
東辻 千枝子 Graduate School of Natural Science and Technology and Faculty of Engineering, Okayama University
Nakanishi Kenta Graduate School of Natural Science and Technology and Faculty of Engineering, Okayama University
鶴田 健二 Graduate School of Natural Science and Technology and Faculty of Engineering, Okayama University
東辻 浩夫 Graduate School of Natural Science and Technology and Faculty of Engineering, Okayama University
抄録
We analyze the ground state of the two-dimensional quantum system of electrons confined in a parabolic potential with the system size around 100. We map the system onto a classical system on the basis of the classical-map hypernetted-chain (CHNC) method which has been proven to work in the integral-equation-based analyses of uniform unbounded systems and then apply classical numerical simulations. We find that the confined system undergoes the transition to the spin polarized state with the decrease of the average density and the corresponding critical value is as low as rs ∼ 0.3 in terms of the usual rs parameter estimated for the average density. As the ground state for given value of the rs parameter, our data give the critical value for the transition around 20 which is consistent with the known possibility. The advantage of our method is a direct applicability to geometrically complex systems which are difficult to analyze by integral equations. The application to the structure like quantum dots reported here is the first example of such applications.
発行日
2008-01
出版物タイトル
Memoirs of the Faculty of Engineering, Okayama University
42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
56
終了ページ
59
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