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Showing 1 to 13 of 13 for “"bose glass"”.
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Observing the 2D Bose glass in an optical quasicrystal
… state of non-interacting and weakly interacting Bose gases in a 2D quasicrystalline lattice. The second experiment is mainly performed in the non-interacting limit, in which we probe the localisation transition by employing triangular lattice pulses and studying the time scale required for …
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Nonequilibrium Relaxation and Aging Scaling Properties of the Coulomb Glass and Bose Glass
… for the two- and three-dimensional Coulomb glass as well as the Bose glass phase of flux lines in type-II superconductors. We find a very fast forming gap in the density of states and explore the dependence of temperature and filling fraction. By studying two scaling methods, we find that …
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Phase Transitions in driven 1D and Quasi-Periodic 2D Optical Lattices
… second, is the realisation of a two dimensional Bose glass state in an optical quasicrystal. Quasicrystalline patterns posses long-range order but lack periodicity. This places them in the spectrum of materials between clean, ordered crystals and disordered, amorphous solids. They share …
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Properties of dirty bosons in disordered optical lattices
The study of the disordered Bose-Hubbard model is key to understanding the interplay of disorder and interactions. Despite many studies with uniform diagonal disorder, few have inquired into experimental realizations with an additional correlated off-diagonal disorder. The presence of a trap and …
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Phases and non-equilibrium dynamics of ultracold bosons in an optical quasicrystal
… localization transition to Anderson insulator or Bose glass states (in non-interacting or interacting cases respectively) reminiscent of that in disordered systems, whilst lacking the rare regions that typically exist in such systems. Here we will cover experiments into this system’s behaviour in …
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Non-Equilibrium Relaxation Dynamics in Disordered Superconductors and Semiconductors
… and charge carriers in the Coulomb glass in disordered semiconductors. We utilize an elastic line model to simulate magnetic flux lines in disordered type-II superconductors by performing Langevin molecular dynamics simulations. We study the non-equilibrium relaxation properties of …
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Quantum simulation beyond periodicity: A theoretical study of the many-body and topological properties of quasiperiodic systems
… Carlo (QMC) techniques and find superfluid, Bose glass, and Mott insulating phases in qualitative agreement with experimental data, as well as uncover the necessary ingredients for the formation of the Mott insulating phase. After focusing on the ground state, static properties of the 8QC, we …
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Renormalization for insulating states of matter
… state with finite compressibility, the Bose glass. The order parameter is the relative variance of the disorder-induced mass distribution. From its distinctive behavior on each phase, we find that the divergence of the relative variance in the Bose glass signals the breakdown of …
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Superconductivity in Multi-Band and Disordered Systems
… state takes place for d + z > 4 either through a Bose glass phase (strong disorder) or through a direct transition to a superfluid (weak disorder). For d + z < 4, disorder is always relevant. The critical value of the disorder that separates these two regimes is shown to be a function of the boson …
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Between order and disorder: ultracold atoms in a quasicrystalline optical lattice
… this the first experimental realisation of a 2D Bose glass.
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Quantum Dynamics of Strongly-Interacting Bosons in Optical Lattices with Disorder
… dynamics of states derived from the disordered Bose-Hubbard model in a trapping potential. We find that the edge states in the trap allow center of mass motion even with insulating states in the center. We identify short and long-time mechanisms for edge state transport in insulating phases. We …
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Dynamics of ultracold bosons in a disordered optical lattice
… a disordered optical lattice to realize the 3D Bose Hubbard model, with independently, dynamically tunable lattice depth and disorder strength. The equilibrium behavior of the Bose Hubbard and disordered Bose Hubbard models are understood, but there are many outstanding questions about dynamics. …
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Compressibility of a bosonic Mott-insulator in a disordered optical lattice
… interacting bosons called the ""disordered Bose--Hubbard model"" using ultracold 87Rb atoms moving in a disordered optical lattice. The ground-state phase diagram of the disordered Bose--Hubbard model at unit filling and zero-temperature is largely considered to be settled from a theory …