Observation of the pairing gap in a strongly interacting Fermi gas

被引：720

作者：

Chin, C

Bartenstein, M

Altmeyer, A

Riedl, S

Jochim, S

Denschlag, JH

Grimm, R

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[2] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria

来源：

SCIENCE | 2004年 / 305卷 / 5687期

关键词：

D O I：

10.1126/science.1100818

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We studied fermionic pairing in an ultracold two-component gas of (6)Li atoms by observing an energy gap in the radio-frequency excitation spectra. With control of the two-body interactions through a Feshbach resonance, we demonstrated the dependence of the pairing gap on coupling strength, temperature, and Fermi energy. The appearance of an energy gap with moderate evaporative cooling suggests that our full evaporation brought the strongly interacting system deep into a superfluid state.

引用

页码：1128 / 1130

页数：3

共 34 条

[21]

Leggett A. J., 1980, Modern Trends in the Theory of Condensed Matter. Proceedings of the XVIth Karpacz Winter School of Theoretical Physics, P13

[22] BOSE CONDENSATION IN AN ATTRACTIVE FERMION GAS - FROM WEAK TO STRONG COUPLING SUPERCONDUCTIVITY [J].