Pairing gap and in-gap excitations in trapped fermionic superfluids
Superconductivity
2016-08-31 v2 Mesoscale and Nanoscale Physics
Statistical Mechanics
Strongly Correlated Electrons
Quantum Physics
Abstract
We consider trapped atomic Fermi gases with Feshbach-resonance enhanced interactions in pseudogap and superfluid temperatures. We calculate the spectrum of RF(or laser)-excitations for transitions that transfer atoms out of the superfluid state. The spectrum displays the pairing gap and also the contribution of unpaired atoms, i.e. in-gap excitations. The results support the conclusion that a superfluid, where pairing is a many-body effect, was observed in recent experiments on RF spectroscopy of the pairing gap.
Cite
@article{arxiv.cond-mat/0405633,
title = {Pairing gap and in-gap excitations in trapped fermionic superfluids},
author = {J. Kinnunen and M. Rodriguez and P. Torma},
journal= {arXiv preprint arXiv:cond-mat/0405633},
year = {2016}
}
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