Itinerant ferromagnetism in 1D two-component Fermi gases

Yuzhu Jiang; D. V. Kurlov; Xi-Wen Guan; F. Schreck; G. V. Shlyapnikov

doi:10.1103/physreva.94.011601

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arXiv · 1512.01392

Itinerant ferromagnetism in 1D two-component Fermi gases

Yuzhu Jiang·D. V. Kurlov·Xi-Wen Guan·F. Schreck·G. V. Shlyapnikov

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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.

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Yuzhu Jiang, D. V. Kurlov, Xi-Wen Guan, F. Schreck, G. V. Shlyapnikov. 2015-12-04. Itinerant ferromagnetism in 1D two-component Fermi gases. https://doi.org/10.1103/physreva.94.011601

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