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题名: Phase separation in optical lattices in a spin-dependent external potential
作者: Chen, A-Hai ;  Gao Xianlong
刊名: PHYSICAL REVIEW A
出版日期: 2010
卷号: 81, 期号:1, 页码:-
关键词: HUBBARD-MODEL ;  FERMI GASES ;  SUPERFLUIDITY ;  TRANSITION ;  PHYSICS ;  ATOMS
学科分类: Physics
通讯作者: Chen, AH , Zhejiang Normal Univ, Dept Phys, Jinhua 340012, Peoples R China
部门归属: [Chen, AH; Gao, XL] Zhejiang Normal Univ, Dept Phys, Jinhua 340012, Peoples R China; [Gao, XL] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: We investigate the phase separation in one-dimensional Fermi gases on optical lattices. The density distributions and the magnetization are calculated by means of the density-matrix renormalization method. The phase separation between spin-up and spin-down atoms is induced by the interplay of the spin-dependent harmonic confinement and the strong repulsive interaction between intercomponent fermions. We find the existence of a critical repulsive interaction strength above which the phase separation evolves. By increasing the trap imbalance, the composite phase of the Mott-insulating core is changed into one of the ferromagnetic insulating core, which is incompressible and originates from the Pauli exclusion principle.
资助者: Qianjiang River Fellow Fund[2008R10029]; NSF of China[10704066, 10974181]; Program for Innovative Research Team in Zhejiang Normal University
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000277958100031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5185
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chen, A-Hai,Gao Xianlong. Phase separation in optical lattices in a spin-dependent external potential[J]. PHYSICAL REVIEW A,2010,81(1):-.
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