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Third Boundary of the Shastry-Sutherland Model by Numerical Diagonalization
https://repo.qst.go.jp/records/49605
https://repo.qst.go.jp/records/496051cac4635-82f9-4d4b-9202-ad329f99ec33
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-02-12 | |||||
| タイトル | ||||||
| タイトル | Third Boundary of the Shastry-Sutherland Model by Numerical Diagonalization | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Nakano, H.
× Nakano, H.× Sakai, T.× Sakai, Toru |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The Shastry?Sutherland model ? the S = 1/2 Heisenberg antiferromagnet on the square lattice accompanied by orthogonal dimerized interactions ? is studied by the numerical-diagonalization method. Large-scale calculations provide results for larger clusters that have not been reported yet. The present study successfully captures the phase boundary between the dimer and plaquette-singlet phases and clarifies that the spin gap increases once when the interaction forming the square lattice is increased from the boundary. Our calculations strongly suggest that in addition to the edge of the dimer phase given by J2/J1 ? 0.675 and the edge of the Neel-ordered phase given by J2/J1 ? 0.76, there exists a third boundary ratio J2/J1 ? 0.70 that divides the intermediate region into two parts, where J1 and J2 denote dimer and square-lattice interactions, respectively. | |||||
| 書誌情報 |
Juornal of the Physical Society of Japan 巻 87, 号 12, p. 123702-1-123702-5, 発行日 2018-11 |
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| 出版者 | ||||||
| 出版者 | The Physical Society of Japan | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9015 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.7566/JPSJ.87.123702 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | http://doi.org/10.7566/JPSJ.87.123702 | |||||
