Itinerant ferromagnetism in an atomic Fermi gas: Influence of population imbalance
arXiv:0905.2036 · doi:10.1103/PhysRevA.79.053606
Abstract
We investigate ferromagnetic ordering in an itinerant ultracold atomic Fermi gas with repulsive interactions and population imbalance. In a spatially uniform system, we show that at zero temperature the transition to the itinerant magnetic phase transforms from first to second order with increasing population imbalance. Drawing on these results, we elucidate the phases present in a trapped geometry, finding three characteristic types of behavior with changing population imbalance. Finally, we outline the potential experimental implications of the findings.
10 pages, 4 figures, typos added, references added
References in corpus (10)
- Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
- Deformation of a Trapped Fermi Gas with Unequal Spin Populations
- BEC-BCS crossover, phase transitions and phase separation in polarized resonantly-paired superfluids
- BCS-BEC crossover in an asymmetric two-component Fermi gas
- Metamagnetic Quantum Criticality Revealed by 17O-NMR in the Itinerant Metamagnet Sr3Ru2O7
- YbRh2Si2: Quantum tricritical behavior in itinerant electron systems
- Breakdown of the local density approximation in interacting systems of cold fermions in strongly anisotropic traps
- Studies on the Weak Itinerant Ferromagnet SrRuO3 under High Pressure to 34 GPa
- Comment on "Superfluid stability in the BEC-BCS crossover"
- High Pressure studies of the magnetic phase transition in MnSi: revisited
Cited by in corpus (14)
- Ultracold Gases of Ytterbium: Ferromagnetism and Mott States in an SU(6) Fermi System
- Excitation spectra and rf-response near the polaron-to-molecule transition from the functional renormalization group
- On the Stability of the Repulsive Fermi Gas with Contact Interactions
- Phase-separated Ferromagnetism in Spin-imbalanced Fermi Atoms Loaded on an Optical Ladder: a DMRG study
- Quantum Monte Carlo simulations of two-dimensional repulsive Fermi gases with population imbalance
- Interaction energy and itinerant ferromagnetism in a strongly interacting Fermi gas in the absence of molecule formation
- Finite range and upper branch effects on itinerant ferromagnetism in repulsive Fermi gases: Bethe-Goldstone ladder resummation approach
- Itinerant ferromagnetism in dilute SU(N) Fermi gases
- Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study
- High-fidelity pseudopotentials for the contact interaction
- Itinerant Ferromagnetism in SU(N)-Symmetric Fermi Gases at Finite Temperature: First Order Phase Transitions and Time-Reversal Symmetry
- Beyond universality in repulsive SU(N) Fermi gases
- Spin transport between polarized Fermi gases near the ferromagnetic phase transition
- One-dimensional two-component fermions with contact even-wave repulsion and SU(2) breaking near-resonant odd-wave attraction