Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2008-09-18
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en
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4
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Physical Review Letters, Volume 101, issue 12, pp. 1-4
Abstract
We address an imbalanced two-component atomic Fermi gas restricted by a one-dimensional (1D) optical lattice and an external harmonic potential, within the mean-field Bogoliubov-de Gennes formalism. We show that characteristic features of the Fulde-Ferrell-Larkin-Ovchinnikov state are visible in the rf spectra and in the momentum-resolved photoemission spectra of the gas. Specially, Andreev states or midgap states can be clearly resolved, which gives a direct experimentally observable signature of the oscillating order parameter.Description
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Bakhtiari, M R, Leskinen, M J & Törmä, P 2008, ' Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices ', Physical Review Letters, vol. 101, no. 12, 120404, pp. 1-4 . https://doi.org/10.1103/PhysRevLett.101.120404