Observation of the Pairing Gap in a Strongly Interacting Fermi Gas-Reference-Cited by-同舟云学术

Observation of the Pairing Gap in a Strongly Interacting Fermi Gas

Published:2004-08-20 Issue:5687 Volume:305 Page:1128-1130
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Chin C.¹²,Bartenstein M.¹²,Altmeyer A.¹²,Riedl S.¹²,Jochim S.¹²,Denschlag J. Hecker¹²,Grimm R.¹²

Affiliation:

1. Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.

2. Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, 6020 Innsbruck, Austria.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference37 articles.

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5. Q. Chen J. Stajic S. Tan K. Levin in preparation (available at http://arxiv.org/abs/cond-mat/0404274).

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