Novel superfluidity in a trapped gas of fermi atoms with repulsive interaction loaded on an optical lattice

M. Machida, S. Yamada, Y. Ohashi, H. Matsumoto

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The effects of the trap potential and the on-site repulsion on the pairing correlation in the confined gas of Fermi atoms placed in the optical lattice were investigated using exact diagonalization method. It was found that the local Mott insulation core develops due to the strong repulsion and the singlet pairing correlation grows remotely between the core edges. It was also found that the 'Mott insulation core' appeared in the center of the trap, where each site was occupied by one atom. The results show that the superfluidity can locally develop at the surrounding of the Mott core.

Original languageEnglish
Article number200402
Pages (from-to)200402-1-200402-4
JournalPhysical review letters
Volume93
Issue number20
DOIs
Publication statusPublished - 2004 Nov 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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