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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
2007
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号76期号:1页码:-
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.
部门归属Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China; Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Large-n Limit Gauge Structure Superconductors Systems Model
学科领域Physics
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收录类别SCI
WOS记录号WOS:000248487900095
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5702
专题理论物理所1978-2010年知识产出
通讯作者Zhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
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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):-.
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