Quantum phase transitions and coherent tunneling in a bilayer of ultracold atoms with dipole interactions
文献类型：期刊论文
| 作者 | Ji, AC ; Sun, Q ; Hu, XH ; liu, WM ; Xie, XC |
| 刊名 | EUROPEAN PHYSICAL JOURNAL B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:6 |
| 关键词 | POLAR-MOLECULES MAGNETIC-FIELD HALL SYSTEMS GASES CONDENSATION DUALITY BOSONS |
| ISSN号 | 1434-6028 |
| 通讯作者 | Ji, AC (reprint author), Captipal Normal Univ, Dept Phys, Beijing 100048, Peoples R China. |
| 中文摘要 | A two-dimensional honeycomb lattice harbours a pair of inequivalent valleys in the k-space electronic structure, in the vicinities of the vertices of a hexagonal Brillouin zone, K-+/-. It is particularly appealing to exploit this emergent degree of freedom of charge carriers, in what is termed 'valleytronics'. The physics of valleys mimics that of spin, and will make possible devices, analogous to spintronics, such as valley filter and valve, and optoelectronic Hall devices, all very promising for next-generation electronics. The key challenge lies with achieving valley polarization, of which a convincing demonstration in a two-dimensional honeycomb structure remains evasive. Here we show, using first principles calculations, that monolayer molybdenum disulphide is an ideal material for valleytronics, for which valley polarization is achievable via valley-selective circular dichroism arising from its unique symmetry. We also provide experimental evidence by measuring the circularly polarized photoluminescence on monolayer molybdenum disulphide, which shows up to 50% polarization. |
| 收录类别 | SCI |
| 资助信息 | NCET; NSFC [11704175]; NKBRSFC [2011CB921500]; US-DOE [DE-FG02-04ER46124] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51715]  |
| 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 | Ji, AC,Sun, Q,Hu, XH,et al. Quantum phase transitions and coherent tunneling in a bilayer of ultracold atoms with dipole interactions[J]. EUROPEAN PHYSICAL JOURNAL B,2012,85(6). |
| APA | Ji, AC,Sun, Q,Hu, XH,liu, WM,&Xie, XC.(2012).Quantum phase transitions and coherent tunneling in a bilayer of ultracold atoms with dipole interactions.EUROPEAN PHYSICAL JOURNAL B,85(6). |
| MLA | Ji, AC,et al."Quantum phase transitions and coherent tunneling in a bilayer of ultracold atoms with dipole interactions".EUROPEAN PHYSICAL JOURNAL B 85.6(2012). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。