BCS-BEC crossover in mix-dimensional Fermi gases

被引：5

作者：

Yang, X. S. ^{[1
,2
]}

Huang, B. B. ^{[3
]}

Wan, S. L. ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Inst Theoret Phys, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[3] Yancheng Inst Technol, Dept Expt Teaching, Yancheng 224051, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL B | 2011年 / 83卷 / 04期

关键词：

ULTRACOLD; STATE;

D O I：

10.1140/epjb/e2011-20354-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate a mix-dimensional Fermi-Fermi mixtures in which one species is confined in two-dimensional (2D) space while the other is free in three-dimensional space (3D). We determine the superfluid transition temperature T (c) for the entire BCS-BEC crossover including the important effects of noncondensed pairs. We find that the transition temperature reduces while the imbalance of mass is increased or lattice spacing is reduced. In spin imbalance case, the stability of superfluid is sharply destroyed by increasing the polarization.

引用

页码：445 / 450

页数：6

共 28 条

[1] Many-body physics with ultracold gases [J].

Bloch, Immanuel ;

Dalibard, Jean ;

Zwerger, Wilhelm .

REVIEWS OF MODERN PHYSICS, 2008, 80 (03) :885-964

[2] Cold asymmetrical fermion superfluids [J].

Caldas, H .

PHYSICAL REVIEW A, 2004, 69 (06) :063602-1

[3] Stability conditions and phase diagrams for two-component Fermi gases with population imbalance [J].

Chen, Qijin ;

He, Yan ;

Chien, Chih-Chun ;

Levin, K. .

PHYSICAL REVIEW A, 2006, 74 (06)

[4] Theory of superfluids with population imbalance: Finite-temperature and BCS-BEC crossover effects [J].

Chen, Qijin ;

He, Yan ;

Chien, Chih-Chun ;

Levin, K. .

PHYSICAL REVIEW B, 2007, 75 (01)

[5] BCS-BEC crossover: From high temperature superconductors to ultracold superfluids [J].

Chen, QJ ;

Stajic, J ;

Tan, S ;

Levin, K .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 412 (01) :1-88

[6] Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations [J].

Chevy, F. .

PHYSICAL REVIEW A, 2006, 74 (06)

[7] Intermediate-temperature superfluidity in an atomic Fermi gas with population imbalance [J].

Chien, Chih-Chun ;

Chen, Qijin ;

He, Yan ;

Levin, K. .

PHYSICAL REVIEW LETTERS, 2006, 97 (09)

[8] Stability of a fully magnetized ferromagnetic state in repulsively interacting ultracold Fermi gases [J].

Cui, Xiaoling ;

Zhai, Hui .

PHYSICAL REVIEW A, 2010, 81 (04)

[9] Stability criteria for breached-pair superfluidity [J].

Forbes, MM ;

Gubankova, E ;

Liu, WV ;

Wilczek, F .

PHYSICAL REVIEW LETTERS, 2005, 94 (01)

[10] Theory of ultracold atomic Fermi gases [J].

Giorgini, Stefano ;

Pitaevskii, Lev P. ;

Stringari, Sandro .

REVIEWS OF MODERN PHYSICS, 2008, 80 (04) :1215-1274

← 1 2 3 →