Ferromagnetic spin correlations in a few-fermion system

被引：47

作者：

Bugnion, P. O. ^{[1
]}

Conduit, G. J. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

GAS; STATE;

D O I：

10.1103/PhysRevA.87.060502

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the spin correlations of a few fermions in a quasi-one-dimensional trap. Exact diagonalization calculations demonstrate that repulsive interactions between the two species drives ferromagnetic correlations. The ejection probability of an atom provides an experimental probe of the spin correlations. With more than five atoms trapped, the system approaches the itinerant Stoner limit. Losses to Feshbach molecules are suppressed by the discretization of energy levels when fewer than seven atoms are trapped.

引用

页数：5

共 48 条

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