Normal-state properties of spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum

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	Normal-state properties of spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum
	Yu, XL ; Zhang, SS ; Liu, WM
刊名	PHYSICAL REVIEW A
	2013
卷号	87 期号:4
ISSN号	1050-2947
通讯作者	Yu, XL (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We investigate normal-state properties of spin-orbit-coupled Fermi gases with repulsive s-wave interaction, in the absence of molecule formation, i.e., in the so-called "upper branch." Within the framework of random-phase approximation, we derive analytical expressions for the quasiparticle lifetime tau(s), the effective mass m*(s), and the Green's function renormalization factor Z(s) in the presence of Rashba spin-orbit coupling. In contrast to spin-orbit-coupled electron gas with Coulomb interaction, we show that the modifications are dependent on the Rashba band index s and occur in the first order of the spin-orbit-coupling strength. We also calculate experimental observables such as spectral weight, density of state, and specific heat, which exhibit significant differences from their counterparts without spin-orbit coupling. We expect our microscopic calculations of these Fermi-liquid parameters would have immediate applications to the spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum.
资助信息	NKBRSFC [2009CB930701, 2010CB922904, 2011CB921502, 2012CB821300]; NSFC [10934010]; NSFC-RGC [11061160490, 1386-N-HKU748/10]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57261]
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	Yu, XL,Zhang, SS,Liu, WM. Normal-state properties of spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum[J]. PHYSICAL REVIEW A,2013,87(4).
APA	Yu, XL,Zhang, SS,&Liu, WM.(2013).Normal-state properties of spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum.PHYSICAL REVIEW A,87(4).
MLA	Yu, XL,et al."Normal-state properties of spin-orbit-coupled Fermi gases in the upper branch of the energy spectrum".PHYSICAL REVIEW A 87.4(2013).