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Ground-state properties of quantum rings with a few electrons: Magnetization, persistent current, and spin chirality
http://hdl.handle.net/2237/8835
http://hdl.handle.net/2237/88355bd0b03b-ba12-46fa-a191-dc98cc45603b
名前 / ファイル | ライセンス | アクション |
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PhysRevB_75-045343.pdf (1.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-10-12 | |||||
タイトル | ||||||
タイトル | Ground-state properties of quantum rings with a few electrons: Magnetization, persistent current, and spin chirality | |||||
言語 | en | |||||
著者 |
Saiga, Y.
× Saiga, Y.× Hirashima, D.S.× Usukura, J. |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | Copyright: American Physical Society, All rights reserved. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Ground-state properties of one-dimensional quantum rings with a few electrons, which interact with each other in the form of 1/ r Coulomb repulsion, are studied by exact diagonalization. For three electrons, the fully spin-polarized ground state is uniquely realized when the diameter of the ring is sufficiently large. In contrast, for four and five electrons, the fully polarized state never becomes the unique ground state, however large the diameter is. These results can be understood in terms of the multiple-spin exchange. When a perpendicular magnetic field is applied to the ring (i.e., the Aharonov-Bohm flux is introduced), the persistent current occurs, and the spin chirality is finite for a certain value of the flux. The difference between the quantum ring and the circularly arranged quantum dots is also discussed. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevB.75.045343 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1098-0121 | |||||
書誌情報 |
en : PHYSICAL REVIEW B 巻 75, 号 4, p. 045343-045343, 発行日 2007-04 |
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値 | application/pdf | |||||
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値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/8835 | |||||
識別子タイプ | HDL |