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49 papers · 1 filter
Direct Meissner Effect Observation of Superconductivity in Compressed H2S
Xiaoli Huang, Xin Wang, Defang Duan +7
Recently, an extremely high superconducting temperature (Tc) of ~200 K has been reported in the sulfur hydride system above 100 GPa. This result is supported by theoretical predict…
Unified Phase Diagram for the Three-Dimensional XY Model of a Point Disordered Type-II Superconductor
Peter Olsson, S. Teitel
We carry out extensive Monte Carlo simulations of the three-dimensional (3D) uniformly frustrated XY model with uncorrelated randomly perturbed couplings, as a model for the equili…
Phase diagram of generalized fully frustrated XY model in two dimensions
Petter Minnhagen, Beom Jun Kim, Sebastian Bernhardsson +1
It is shown that the phase diagram of the two-dimensional generalized fully-frustrated XY model on a square lattice contains a crossing of the chirality transition and the Kosterli…
Dynamic critical behaviors in two-dimensional Josephson junction arrays with positional disorder
Jaegon Um, Beom Jun Kim, Petter Minnhagen +2
We numerically investigate dynamic critical behaviors of two-dimensional (2D) Josephson-junction arrays with positional disorder in the scheme of the resistively shunted junction d…
Pinning and Depinning of the Bragg Glass in a Point Disordered Model Superconductor
Peter Olsson
The three-dimensional frustrated anisotropic XY model with point disorder is studied with both Monte Carlo simulations and resistively-shunted-junction dynamics to model the dynami…
BCS-BEC Crossover in Atomic Fermi Gases with a Narrow Resonance
L. M. Jensen, H. M. Nilsen, Gentaro Watanabe
We determine the effects on the BCS-BEC crossover of the energy dependence of the effective two-body interaction, which at low energies is determined by the effective range. To des…