Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice
文献类型：期刊论文
| 作者 | Liu, HD ; Chen, YH ; Lin, HF ; Tao, HS ; Liu, WM |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2014 |
| 卷号 | 4 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Liu, WM (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The Shastry-Sutherland lattice, one of the simplest systems with geometrical frustration, which has an exact eigenstate by putting singlets on diagonal bonds, can be realized in a group of layered compounds and raises both theoretical and experimental interest. Most of the previous studies on the Shastry-Sutherland lattice are focusing on the Heisenberg model. Here we opt for the Hubbard model to calculate phase diagrams over a wide range of interaction parameters, and show the competing effects of interaction, frustration and temperature. At low temperature, frustration is shown to favor a paramagnetic metallic ground state, while interaction drives the system to an antiferromagnetic insulator phase. Between these two phases, there are an antiferromagnetic metal phase and a paramagnetic insulator phase (which should consist of a small plaquette phase and a dimer phase) resulting from the competition of the frustration and the interaction. Our results may shed light on more exhaustive studies about quantum phase transitions in geometrically frustrated systems. |
| 资助信息 | NKBRSFC [2011CB921502, 2012CB821305]; NSFC [61227902, 61378017, 11311120053] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59722]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, HD,Chen, YH,Lin, HF,et al. Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice[J]. SCIENTIFIC REPORTS,2014,4. |
| APA | Liu, HD,Chen, YH,Lin, HF,Tao, HS,&Liu, WM.(2014).Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice.SCIENTIFIC REPORTS,4. |
| MLA | Liu, HD,et al."Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice".SCIENTIFIC REPORTS 4(2014). |
入库方式： OAI收割
来源：物理研究所
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