Spontaneous Inhomogeneous Phases in Ultracold Dipolar Fermi Gases

Abstract

We study the collapse of ultracold fermionic gases into inhomogeneous states due to strong dipolar interaction in both 2D and 3D. Depending on the dimensionality, we find that two different types of inhomogeneous states are stabilized once the dipole moment reaches a critical value d > d(sub c): the stripe phase and phase separation between high and low densities. In 2D, we prove that the stripe phase is always favored for d greater than or approximate to d(sub c), regardless of the microscopic details of the system. In 3D, the one-loop perturbative calculation suggests that the same type of instability leads to phase separation. Experimental detection and finite-temperature effects are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Mar 16, 2010
Accession Number
ADA524734

Entities

People

  • Congjun Wu
  • Kai Sun
  • S. Das Sarma

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Charge Density
  • Critical Temperature
  • Crystal Lattices
  • Dipole Moments
  • Dispersion Relations
  • Fermions
  • Low Density
  • Momentum
  • Particle Physics
  • Phase Separation
  • Phase Transformations
  • Physics
  • Subatomic Particles
  • Transition Temperature
  • Transitions
  • Two Dimensional
  • Universities

Fields of Study

  • Physics

Readers

  • Analytical Mechanics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.