Two-leg fermionic Hubbard ladder system in the presence of state-dependent hopping

被引:4
|
作者
Uchino, Shun [1 ]
Giamarchi, Thierry [1 ]
机构
[1] Univ Geneva, DQMP, CH-1211 Geneva, Switzerland
来源
PHYSICAL REVIEW A | 2015年 / 91卷 / 01期
关键词
PHASE-DIAGRAM; MAGNETISM; LIQUID;
D O I
10.1103/PhysRevA.91.013604
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We study a two-leg fermionic Hubbard ladder model with a state-dependent hopping. We find that, contrary to the case without a state-dependent hopping, for which the system has a superfluid nature regardless of the sign of the interaction at incommensurate filling, in the presence of such a hopping a spin-triplet superfluid, spin-density wave, and charge-density wave phases emerge. We examine our results in the light of recent experiments on periodically driven optical lattices in cold atoms. We give protocols allowing us to realize the spin-triplet superfluid elusive in the cold atoms.
引用
收藏
页数:9
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