Disorder-Driven Loss of Phase Coherence in a Quasi-2D Cold Atom System
arXiv:1111.1316 · doi:10.1088/1367-2630/14/7/073024
Abstract
We study the order parameter of a quasi-2D gas of ultracold atoms trapped in an optical potential in the presence of controllable disorder. Our results show that disorder drives phase fluctuations without significantly affecting the amplitude of the quasi-condensate order parameter. This is evidence that disorder can drive phase fluctuations in 2D systems, relevant to the phase-fluctuation mechanism for the superconductor-to-insulator phase transition (SIT) in disordered 2D superconductors.
References in corpus (7)
- Direct observation of Anderson localization of matter-waves in a controlled disorder
- Observation of scale invariance and universality in two-dimensional Bose gases
- Strongly interacting bosons in a disordered optical lattice
- Exploring the thermodynamics of a two-dimensional Bose gas
- Anisotropic 2D diffusive expansion of ultra-cold atoms in a disordered potential
- Coherence properties of a 2D trapped Bose gas around the superfluid transition
- Effect of disorder close to the superfluid transition in a two-dimensional Bose gas
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- Universal Superfluid Transition and Transport Properties of Two-Dimensional Dirty Bosons
- Direct Observation of Fragmentation in a Disordered, Strongly Interacting Fermi Gas
- Simulation of Anderson localization in two-dimensional ultracold gases for point-like disorder
- Finite temperature disordered bosons in two dimensions
- Phase diagram of quasi-two-dimensional bosons in laser speckle potential
- Momentum isotropisation in random potentials
- Cloud shape of a molecular Bose-Einstein condensate in a disordered trap: a case study of the dirty boson problem
- Bogoliubov theory on the disordered lattice
- Quasi-long-range order in trapped two-dimensional Bose gases
- Superfluid-insulator transition of two-dimensional disordered Bose gases
- Phase diagrams of 2D and 3D disordered Bose gases in the local density approximation
- Transport of Hubbard-Band Quasiparticles in Disordered Optical Lattices
- Localization of weakly interacting bosons in two dimensions: disorder vs lattice geometry effects
- Superfluid-insulator transition in weakly interacting disordered Bose gases: a kernel polynomial approach
- Griffiths Physics in an Ultracold Bose Gas
- Effect of Weak Disorder on the BCS-BEC crossover in a two-dimensional Fermi Gas