Magnetic polarons in two-component hard-core bosons

被引：1
|
作者：
Yanay, Yariv [1 ]
Mueller, Erich J. [1 ]
Elser, Veit [1 ]
机构：
[1] Cornell Univ, Lab Atom & Solid State Phys, Ithaca, NY 14850 USA
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 04期
关键词：
SINGLE ATOMS;
D O I：
10.1103/PhysRevA.87.043622
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We use a high-temperature expansion to explore spin correlations around a single hole in a two-dimensional lattice filled with a hard-core two-component bose gas. We find that the spins around the hole develop ferromagnetic order and quantify the degree of polarization at temperatures of the order of the hopping energy, finding a measurably nonzero polarization. We also discuss the effect of fixing the overall magnetization of the system for finite-sized systems. DOI: 10.1103/PhysRevA.87.043622
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页数：4
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