Ferromagnetism in a two-component Bose-Hubbard model with synthetic spin-orbit coupling

被引：21
|
作者：
Zhao, Jize [1 ,2 ]
Hu, Shijie [3 ]
Chang, Jun [4 ,5 ]
Zhang, Ping [1 ,2 ]
Wang, Xiaoqun [6 ,7 ,8 ]
机构：
[1] Inst Appl Phys & Computat Math, LCP, Beijing 100088, Peoples R China
[2] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China
[3] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[4] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
[5] Chinese Acad Sci, Kavli Inst Theoret Phys, Beijing 100190, Peoples R China
[6] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
[7] Renmin Univ China, Beijing Lab Optoelect Funct Mat & Micronano Devic, Beijing 100872, Peoples R China
[8] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 04期
关键词：
EINSTEIN CONDENSATION; ENTANGLEMENT; SUPERFLUID; INSULATOR; LATTICE; GAS;
D O I：
10.1103/PhysRevA.89.043611
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the effect of the synthetic spin-orbit coupling in a two-component Bose-Hubbard model in one dimension by employing the density-matrix renormalization group method. A ferromagnetic long-range order emerges in both Mott-insulator and superfluid phases resulting from the spontaneous breaking of the Z(2) symmetry, when the spin-orbit coupling term becomes comparable to the hopping kinetic energy and the intercomponent interaction is smaller than the intracomponent one as well. This effect is expected to be detectable with the present realization of the synthetic spin-orbit coupling in experiments.
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页数：6
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