Mott transition and antiferromagnetism of cold fermions in the decorated honeycomb lattice
文献类型：期刊论文
| 作者 | Lin, HF ; Chen, YH ; Liu, HD ; Tao, HS ; Liu, WM |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:5 |
| ISSN号 | 1050-2947 |
| 通讯作者 | Lin, HF (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We investigate two-component ultracold fermions loaded in a decorated honeycomb lattice described by the Hubbard model with repulsive interactions and nearest-neighbor hopping. The phase transitions are studied by combining the cellular dynamical mean-field theory with the continuous-time quantum Monte Carlo method. For weak interactions, the quadratic band crossing point is broken to a linear band crossing point and the system becomes a semimetal. With increasing interaction, the system undergoes a first-order phase transition to an antiferromagnetic Mott insulator at low temperatures. Below the critical temperature, due to the charge nematic fluctuation, a nematic metal forms between the semimetal and the antiferromagnetic Mott insulator. The effects of lattice anisotropy are also addressed. Furthermore, we discuss how to detect these phases in real experiments. |
| 资助信息 | NKBRSFC [2011CB921502, 2012CB821305]; NSFC [61227902, 61378017, 61405003, 11434015]; SKLQOQOD [KF201403]; SPRPCAS [XDB01020300] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59456]  |
| 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 | Lin, HF,Chen, YH,Liu, HD,et al. Mott transition and antiferromagnetism of cold fermions in the decorated honeycomb lattice[J]. PHYSICAL REVIEW A,2014,90(5). |
| APA | Lin, HF,Chen, YH,Liu, HD,Tao, HS,&Liu, WM.(2014).Mott transition and antiferromagnetism of cold fermions in the decorated honeycomb lattice.PHYSICAL REVIEW A,90(5). |
| MLA | Lin, HF,et al."Mott transition and antiferromagnetism of cold fermions in the decorated honeycomb lattice".PHYSICAL REVIEW A 90.5(2014). |
入库方式： OAI收割
来源：物理研究所
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