Stability of Superfluid and Supersolid Phases of Dipolar Bosons in Optical Lattices

被引：80
|
作者：
Danshita, Ippei [1 ]
de Melo, Carlos A. R. Sa [2 ]
机构：
[1] Waseda Univ, Dept Phys, Shinjuku Ku, Tokyo 1698555, Japan
[2] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.103.225301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We perform a stability analysis of superfluid (SF) and supersolid (SS) phases of polarized dipolar bosons in two-dimensional optical lattices at high filling factors and zero temperature, and obtain the phase boundaries between SF, checkerboard SS (CSS), striped SS (SSS), and collapse. We show that the phase diagram can be explored through the application of an external field and the tuning of its direction with respect to the optical lattice plane. In particular, we find a transition between the CSS and SSS phases.
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页数：4
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