Dipolar fermions in a multilayer geometry
arXiv:1601.06988 · doi:10.1103/PhysRevB.95.085124
Abstract
We investigate the behavior of identical dipolar fermions with aligned dipole moments in two-dimensional multilayers at zero temperature. We consider density instabilities that are driven by the attractive part of the dipolar interaction and, for the case of bilayers, we elucidate the properties of the stripe phase recently predicted to exist in this interaction regime. When the number of layers is increased, we find that this "attractive" stripe phase exists for an increasingly larger range of dipole angles, and if the interlayer distance is sufficiently small, the stripe phase eventually spans the full range of angles, including the situation where the dipole moments are aligned perpendicular to the planes. In the limit of an infinite number of layers, we derive an analytic expression for the interlayer effects in the density-density response function and, using this result, we find that the stripe phase is replaced by a collapse of the dipolar system.
9 pages, 8 figures
References in corpus (23)
- A High Phase-Space-Density Gas of Polar Molecules
- Ultracold Dipolar Gas of Fermionic NaK Molecules in their Absolute Ground State
- Quantum degenerate dipolar Fermi gas
- Ultracold Fermionic Feshbach Molecules of NaK
- Stability of quasi-two-dimensional Bose-Einstein condensates with dominant dipole-dipole interactions
- Quantum fluids of self-assembled chains of polar molecules
- Quantum phases of a Two-Dimensional Dipolar Fermi Gas
- Interlayer superfluidity in bilayer systems of fermionic polar molecules
- Phase space deformation of a trapped dipolar Fermi gas
- Observation of Fermi surface deformation in a dipolar quantum gas
- Spontaneous inhomogeneous phases in ultracold dipolar Fermi gases
- A chromium dipolar Fermi sea
- Density wave instabilities of tilted fermionic dipoles in a multilayer geometry
- Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid
- Liquid crystal phases of two-dimensional dipolar gases and Berezinskii-Kosterlitz-Thouless melting
- Fixed-node diffusion Monte Carlo study of the BCS-BEC crossover in a bilayer system of fermionic dipoles
- Properties of the density-wave phase of a two-dimensional dipolar Fermi gas
- Density-wave phases of dipolar fermions in a bilayer
- Coexistence of density wave and superfluid order in a dipolar Fermi gas
- Density-functional theory for the crystalline phases of a two-dimensional dipolar Fermi gas
- Physical dipoles and second order perturbation theory for dipolar fermions in two dimensions
- Second-order interaction corrections to the Fermi surface and the quasiparticle properties of dipolar fermions in three dimensions
- Stability of a trapped dipolar quantum gas