Itinerant ferromagnetism in 1D two-component Fermi gases

Abstract

We study a one-dimensional two-component atomic Fermi gas with an infinite intercomponent contact repulsion. It is found that adding an attractive resonant odd-wave interaction breaking the rotational symmetry one can make the ground state ferromagnetic. A promising system for the observation of this itinerant ferromagnetic state is a 1D gas of ${}^{40}$K atoms, where 3D $s$-wave and $p$-wave Feshbach resonances are very close to each other and the 1D confinement significantly reduces the inelastic decay.

arXiv comment5 pages, 2 figures, with 6 pages supplemental material

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Cited by in corpus (18)

• Universal One-dimensional Atomic Gases Near Odd-wave Resonance
• Two-body relaxation of spin-polarized fermions in reduced dimensionalities near a p-wave Feshbach resonance
• Probing open- and closed-channel p-wave resonances
• Quantum Monte Carlo simulations of two-dimensional repulsive Fermi gases with population imbalance
• In Situ Thermometry of Fermionic Cold-Atom Quantum Wires
• Universal Feature in Optical Control of a p-wave Feshbach Resonance
• Majorana edge state in a number-conserving Fermi gas with tunable p-wave interaction
• Itinerant ferromagnetism of two-dimensional repulsive fermions with Rabi coupling
• Fermionic quantum carpets: From canals and ridges to solitonlike structures
• Universal relations for hybridized $s$- and $p$-wave interactions from spin-orbital coupling
• Universal relations and normal-state properties of a Fermi gas with laser-dressed mixed-partial-wave interactions
• Exchange interactions in the Hubbard-Stratonovich transformation for the stability analysis of itinerant ferromagnetism
• Polarization in a three-dimensional Fermi gas with Rabi coupling
• Collective P-Wave Orbital Dynamics of Ultracold Fermions
• One-dimensional two-component fermions with contact even-wave repulsion and SU(2) breaking near-resonant odd-wave attraction
• Itinerant ferromagnetism in the repulsive Hubbard chain with anisotropic odd-wave attraction
• Resonance-facilitated three-channel p-wave scattering
• Strongly Repulsive 1D Gases at Higher Branches: Spin-Charge Correlation and Coupled Spin-Chain Model