Homogeneous Atomic Fermi Gases

被引：202

作者：

Mukherjee, Biswaroop ^{[1
,2
]}

Yan, Zhenjie ^{[1
,2
]}

Patel, Parth B. ^{[1
,2
]}

Hadzibabic, Zoran ^{[1
,2
,3
]}

Yefsah, Tarik ^{[1
,2
,4
,5
]}

Struck, Julian ^{[1
,2
]}

Zwierlein, Martin W. ^{[1
,2
]}

机构：

[1] MIT, Harvard Ctr Ultracold Atoms, Elect Res Lab, Cambridge, MA 02139 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

[4] Sorbonne Univ, UPMC, ENS PSL Res Univ, CNRS,Lab Kastler Brossel, F-75005 Paris, France

[5] Coll France, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 12期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

OPTICAL LATTICE; HUBBARD-MODEL; ANTIFERROMAGNETIC CORRELATIONS; MOTT INSULATOR; CRITICAL FIELD; BOSE-GAS; SPIN; SUPERCONDUCTORS; THERMODYNAMICS; COHERENCE;

D O I：

10.1103/PhysRevLett.118.123401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the creation of homogeneous Fermi gases of ultracold atoms in a uniform potential. In the momentum distribution of a spin-polarized gas, we observe the emergence of the Fermi surface and the saturated occupation of one particle per momentum state: the striking consequence of Pauli blocking in momentum space for a degenerate gas. Cooling a spin-balanced Fermi gas at unitarity, we create homogeneous superfluids and observe spatially uniform pair condensates. For thermodynamic measurements, we introduce a hybrid potential that is harmonic in one dimension and uniform in the other two. The spatially resolved compressibility reveals the superfluid transition in a spin-balanced Fermi gas, saturation in a fully polarized Fermi gas, and strong attraction in the polaronic regime of a partially polarized Fermi gas.

引用

页数：5

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