中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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

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