Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice
文献类型：期刊论文
| 作者 | Bao, A ; Chen, YH ; Zhang, XZ |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2013 |
| 卷号 | 22期号:11 |
| 关键词 | triangular optical lattice cold atoms cluster dynamical approximation |
| ISSN号 | 1674-1056 |
| 通讯作者 | Bao, A (reprint author), Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China. |
| 中文摘要 | The effect of anisotropy caused by a confining potential on the properties of fermionic cold atoms in a triangular optical lattice is systematically investigated by using the dynamical cluster approximation combined with the continuous time quantum Monte-Carlo algorithm. The quantum phase diagrams which reflect the temperature-interaction relation and the competition between the anisotropic parameter and the interaction are presented with full consideration of the anisotropy of the system. Our results show that the system undergoes a transition from Fermi liquid to Mott insulator when the repulsive interaction reaches a critical value. The Kondo effect also can be observed in this system and the pseudogap is suppressed at low temperatures due to the Kondo effect. A feasible experiment protocol to observe these phenomena in an anisotropic triangular optical lattice with cold atoms is proposed, in which the hopping terms are closely related to the lattice confining potential and the atomic interaction can be adjusted via the Feshbach resonance. |
| 资助信息 | National Natural Science Foundation of China [11074141, 11174169, 10934010]; National Natural Science Foundation of China and Research Grant Council (NSFC/RGC) Joint Research Scheme [11061160490]; National Basic Research Program of China [2011CB921502, 2012CB821305, 2010CB922904, 2009CB930701, 2009CB929202] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57377]  |
| 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 | Bao, A,Chen, YH,Zhang, XZ. Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice[J]. CHINESE PHYSICS B,2013,22(11). |
| APA | Bao, A,Chen, YH,&Zhang, XZ.(2013).Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice.CHINESE PHYSICS B,22(11). |
| MLA | Bao, A,et al."Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice".CHINESE PHYSICS B 22.11(2013). |
入库方式： OAI收割
来源：物理研究所
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