Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling

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	Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling
	Tu, Hong-Hao; Zhang, Guang-Ming; Yu, Lu; Zhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
刊名	PHYSICAL REVIEW B
	2007
卷号	76 期号:1 页码:-
关键词	Large-n Limit Gauge Structure Superconductors Systems Model
ISSN号	1098-0121
英文摘要	We study various Mott insulating phases of interacting spin-3/3 fermionic ultracold atoms in two-dimensional square optical lattices at half filling. Using a generalized one-band Hubbard model with hidden SO(5) symmetry, we identify two distinct symmetry breaking phases: the degenerate antiferromagnetic spin-dipole-spin-octupole ordering and spin-quadrupole ordering, depending on the sign of the spin-dependent interaction. These two competing orders exhibit very different symmetry properties, low energy excitations, and topological characterizations. Near the SU(4) symmetric point, a quantum critical state with a pi-flux phase may emerge due to strong quantum fluctuations, leading to spin algebraic correlations and gapless excitations.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000248487900095
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5702]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Zhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Tu, Hong-Hao,Zhang, Guang-Ming,Yu, Lu,et al. Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling[J]. PHYSICAL REVIEW B,2007,76(1):-.
APA	Tu, Hong-Hao,Zhang, Guang-Ming,Yu, Lu,&Zhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.(2007).Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling.PHYSICAL REVIEW B,76(1),-.
MLA	Tu, Hong-Hao,et al."Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling".PHYSICAL REVIEW B 76.1(2007):-.