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Title: Two-Component Fermi Gas on Internal-State-Dependent Optical Lattices

Abstract

We study the phase diagram of a one-dimensional, two-component (i.e., pseudo-'spin'-(1/2)) ultracold atomic Fermi gas. The two atom species can have different hopping or mass. A very rich phase diagram for equal densities of the species is found, containing Mott insulators and superfluids. We also discuss coupling such 1D systems and the experimental signatures of the phases. In particular, we compute the spin-structure factor at small momentum, which should reveal a spin gap.

Authors:
 [1];  [2];  [3]
  1. Donostia Int'l Physics Center (DIPC), Manuel de Lardizabal, 4. 20018-Donostia (Spain)
  2. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)
  3. University of Geneva, 24 Quai Enerst-Ansermet, CH-1211 Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
20699615
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 95; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevLett.95.226402; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; DENSITY; FERMI GAS; MASS; ONE-DIMENSIONAL CALCULATIONS; PHASE DIAGRAMS; SPIN; STRUCTURE FACTORS; SUPERFLUIDITY

Citation Formats

Cazalilla, M.A., Ho, A.F., and Giamarchi, T.. Two-Component Fermi Gas on Internal-State-Dependent Optical Lattices. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.226402.
Cazalilla, M.A., Ho, A.F., & Giamarchi, T.. Two-Component Fermi Gas on Internal-State-Dependent Optical Lattices. United States. doi:10.1103/PhysRevLett.95.226402.
Cazalilla, M.A., Ho, A.F., and Giamarchi, T.. Fri . "Two-Component Fermi Gas on Internal-State-Dependent Optical Lattices". United States. doi:10.1103/PhysRevLett.95.226402.
@article{osti_20699615,
title = {Two-Component Fermi Gas on Internal-State-Dependent Optical Lattices},
author = {Cazalilla, M.A. and Ho, A.F. and Giamarchi, T.},
abstractNote = {We study the phase diagram of a one-dimensional, two-component (i.e., pseudo-'spin'-(1/2)) ultracold atomic Fermi gas. The two atom species can have different hopping or mass. A very rich phase diagram for equal densities of the species is found, containing Mott insulators and superfluids. We also discuss coupling such 1D systems and the experimental signatures of the phases. In particular, we compute the spin-structure factor at small momentum, which should reveal a spin gap.},
doi = {10.1103/PhysRevLett.95.226402},
journal = {Physical Review Letters},
number = 22,
volume = 95,
place = {United States},
year = {Fri Nov 25 00:00:00 EST 2005},
month = {Fri Nov 25 00:00:00 EST 2005}
}