Quantum degenerate dipolar Fermi gas
arXiv:1202.4444 · doi:10.1103/PhysRevLett.108.215301
Abstract
The interplay between crystallinity and superfluidity is of great fundamental and technological interest in condensed matter settings. In particular, electronic quantum liquid crystallinity arises in the non-Fermi liquid, pseudogap regime neighboring a cuprate's unconventional superconducting phase. While the techniques of ultracold atomic physics and quantum optics have enabled explorations of the strongly correlated, many-body physics inherent in, e.g., the Hubbard model, lacking has been the ability to create a quantum degenerate Fermi gas with interparticle interactions---such as the strong dipole-dipole interaction---capable of inducing analogs to electronic quantum liquid crystals. We report the first quantum degenerate dipolar Fermi gas, the realization of which opens a new frontier for exploring strongly correlated physics and, in particular, the quantum melting of smectics in the pristine environment provided by the ultracold atomic physics setting. A quantum degenerate Fermi gas of the most magnetic atom 161Dy is produced by laser cooling to 10 uK before sympathetically cooling with ultracold, bosonic 162Dy. The temperature of the spin-polarized 161Dy is a factor T/TF=0.2 below the Fermi temperature TF=300 nK. The co-trapped 162Dy concomitantly cools to approximately Tc for Bose-Einstein condensation, thus realizing a novel, nearly quantum degenerate dipolar Bose-Fermi gas mixture.
6 pages, 3 figures
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- Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms
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- Finite-temperature trapped dipolar Bose gas
- Quantum phases of attractive bosons on a Bose-Hubbard ladder with three-body constraint
- Ab initio properties of the ground-state polar and paramagnetic europium-alkali-metal-atom and europium-alkaline-earth-metal-atom molecules
- Unconventional Spin Density Waves in Dipolar Fermi Gases
- Density-wave phases of dipolar fermions in a bilayer
- Spontaneous time-reversal symmetry breaking for spinless fermions on a triangular lattice
- Magnetostriction and exchange effects in trapped dipolar Bose and Fermi gases
- Anisotropic Coherence properties in a trapped quasi2D dipolar gas
- Driving Dipolar Fermions into the Quantum Hall Regime by Spin-Flip Induced Insertion of Angular Momentum
- Confinement-induced collapse of a dipolar Bose-Einstein condensate
- Possible quantum phase-manipulation of a two-leg ladder in mixed-dimensional fermionic cold atoms
- Phase diagram of two-component dipolar fermions in one-dimensional optical lattices
- A local exchange theory for trapped dipolar gases