Wigner crystallization in rapidly rotating 2D dipolar fermi gases

被引：37

作者：

Baranov, M. A. ^{[1
,2
]}

Fehrmann, H. ^{[3
]}

Lewenstein, M. ^{[4
,5
]}

机构：

[1] Austrian Acad Sci, Inst Quantenopt & Quateninformat, A-6020 Innsbruck, Austria

[2] RRC Kurchatov Inst, Moscow 115582, Russia

[3] Leibniz Univ Hannover, Inst Theoret, D-30167 Hannover, Germany

[4] ICREA, Castelldefels 08860, Spain

[5] ICFO, Castelldefels 08860, Spain

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.100.200402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the competition between the Wigner crystal and the Laughlin liquid states in an ultracold quasi-two-dimensional rapidly rotating polarized fermionic dipolar gas, and find that the Wigner crystal has a lower energy below a critical filling factor. We examine the quantum crystal to liquid transition for different confinements in the third direction. Our analysis of the phonon spectra of the Wigner crystal taking into account the phonon-phonon interactions also shows the stability of the Wigner crystal for sufficiently low filling factors (nu < 1/7).

引用

页数：4

共 34 条

[1] Observation of vortex lattices in Bose-Einstein condensates [J].