Atomic Fermi gas in the trimerized kagomé lattice at 2/3 filling

We study low temperature properties of a spinless interacting Fermi gas in the trimerized kagomé lattice. The case of two fermions per trimer is described by a quantum spin 1/2 model on the triangular lattice with couplings depending on the bond directions. Using exact diagonalizations we show that...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 95; no. 6; p. 060403
Main Authors Damski, B, Everts, H-U, Honecker, A, Fehrmann, H, Santos, L, Lewenstein, M
Format Journal Article
LanguageEnglish
Published United States 05.08.2005
Online AccessGet more information

Cover

More Information
Summary:We study low temperature properties of a spinless interacting Fermi gas in the trimerized kagomé lattice. The case of two fermions per trimer is described by a quantum spin 1/2 model on the triangular lattice with couplings depending on the bond directions. Using exact diagonalizations we show that the system exhibits nonstandard properties of a quantum spin-liquid crystal, combining a planar antiferromagnetic order with an exceptionally large number of low-energy excitations.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.95.060403