Ground state of a two-component dipolar Fermi gas in a harmonic potential

Przemyslaw Bienias, Krzysztof Pawłowski, Tilman Pfau, Kazimierz Rza̧zewski

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5 Scopus citations

Abstract

Interacting two-component Fermi gases are at the heart of our understanding of macroscopic quantum phenomena such as superconductivity. The changing nature of the interaction is expected to head to novel quantum phases. Here we study the ground state of a two-component fermionic gas in a harmonic potential with dipolar and contact interactions. Using a variational Wigner function we present the phase diagram of the system with equal but opposite values of the magnetic moment. We identify the second-order phase transition from paramagnetic to ferronematic phases. Moreover, we show the impact of the experimentally relevant magnetic field on the stability and magnetization of the system. We also investigate a two-component Fermi gas with large but almost equal values of the magnetic moment to study how the interplay between contact and dipolar interactions affects the stability properties of the mixture. To be specific we discuss experimentally relevant parameters for ultracold 161Dy.

Original languageEnglish (US)
Article number043604
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume88
Issue number4
DOIs
StatePublished - Oct 4 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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