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Ground-State Phase Diagram of an Anisotropic S = 1 Ferromagnetic– Antiferromagnetic Bond-Alternating Chain
https://repo.qst.go.jp/records/79641
https://repo.qst.go.jp/records/796415065a133-4435-4f56-a9bf-c59b339596f5
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-03-25 | |||||
| タイトル | ||||||
| タイトル | Ground-State Phase Diagram of an Anisotropic S = 1 Ferromagnetic– Antiferromagnetic Bond-Alternating Chain | |||||
| 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_5794 | |||||
| 資源タイプ | conference paper | |||||
| 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 |
Okamoto, Kiyomi
× Okamoto, Kiyomi× Tonegawa, Takashi× Kaburagi, Makoto× Sakai, Toru× Sakai, Toru |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | By using mainly numerical methods, we investigate the ground-state phase diagram (GSPD) of an S = 1 ferromagnetic–antiferromagnetic bond- alternating chain with the XXZ and the on-site anisotropies. This system can be mapped onto an anisotropic spin-2 chain when the ferromagnetic interaction is much stronger than the antiferromagnetic interaction. Since there are many quantum parameters in this system, we numerically obtained the GSPD on the plane of the magnitude of the antiferromagnetic coupling versus its XXZ anisotropy, by use of the exact diagonalization, the level spectroscopy as well as the phenomenological renormalization group. The obtained GSPD consists of six phases. They are the XY1, the large-D (LD), the intermediate-D (ID), the Haldane (H), the spin-1 singlet dimer (SD), and the Néel phases. Among them, the LD, the H, and the SD phases are the trivial phases, while the ID phase is the symmetry -protected topological phase. The former three are smoothly connected without any quantum phase transitions. It is also emphasized that the ID phase appears in a wider region compared with the case of the GSPD of the anisotropic spin-2 chain with the XXZ and the on-site anisotropies. |
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| 書誌情報 |
JPS Conference Proceedings 巻 30, p. 011024-1-011024-6, 発行日 2020-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2435-3892 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.7566/JPSCP.30.011024 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.jps.jp/doi/abs/10.7566/JPSCP.30.011024 | |||||
