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Tu, Hong-Hao; Zhang, Guang-Ming; Yu, Lu; Zhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
Mott insulating phases and quantum phase transitions of interacting spin-3/2 fermionic cold atoms in optical lattices at half filling
Source PublicationPHYSICAL REVIEW B
KeywordLarge-n Limit Gauge Structure Superconductors Systems Model
AbstractWe 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.
2007
ISSN1098-0121
Volume76Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5702
CollectionSCI期刊论文
Corresponding AuthorZhang, GM , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
Recommended Citation
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):-.
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