Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions

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	Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions
	Xu, ZH ; Li, LH ; Gao, XL ; Chen, S
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2013
卷号	25 期号:5
ISSN号	0953-8984
通讯作者	Xu, ZH (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The ground state properties of the Hubbard model with or without long-range interactions in the regime with strongly repulsive on-site interactions are investigated by means of the exact diagonalization method. We show that the appearance of N-crests in the density profile of a trapped N-fermion system is a natural result of 'fermionization' between antiparallel-spin fermions in the strongly repulsive limit and cannot be taken as the only signature of the Wigner crystal phase, as the static structure factor does not show any signature of crystallization. In contrast, both the density distribution and the static structure factor of the Hubbard model with strong long-range interactions display clear signatures of the Wigner crystal phase. Our results indicate the important role of long-range interaction in the formation of the Wigner crystal phase.
资助信息	National Program for Basic Research of MOST; NSF of China [11121063, 11174360, 10974234]; 973 grant
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57663]
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	Xu, ZH,Li, LH,Gao, XL,et al. Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2013,25(5).
APA	Xu, ZH,Li, LH,Gao, XL,&Chen, S.(2013).Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions.JOURNAL OF PHYSICS-CONDENSED MATTER,25(5).
MLA	Xu, ZH,et al."Wigner crystal versus fermionization for one-dimensional Hubbard models with and without long-range interactions".JOURNAL OF PHYSICS-CONDENSED MATTER 25.5(2013).