5 papers
Light induced Berezinskii-Kosterlitz-Thouless transition in Superconducting Films
Tien-Tien Yeh, Evan Wilson, Mikael Fogelström +1
We report a light-driven non-equilibrium vortex Berezinskii-Kosterlitz-Thouless (BKT) transition in a superconductor. We use a time-dependent Ginzburg-Landau model to demonstrate v…
Probing Fractional Quantum Hall states in weakly interacting Fermi gases
Viktor Bekassy, Mikael Fogelström, Johannes Hofmann
Quantum gases are used to simulate the physics of the lowest Landau level (LLL) with neutral atoms, which in the simplest setup is achieved by rotating the gas at the confining har…
Strengthened correlations near [110] edges of -wave superconductors in the t-J model with the Gutzwiller approximation
Ambjorn Joki, Mikael Fogelstrom, Tomas Lofwander
We report results of a study of strongly correlated -wave superconducting slabs within a t-J model solved using the statistically consistent Gutzwiller approach. For different d…
Impurity strength-temperature phase diagram with phase crystals and competing time-reversal symmetry breaking states in nodal -wave superconductors
Kevin Marc Seja, Niclas Wall-Wennerdal, Tomas Löfwander +3
Phase crystals are a class of nonuniform superconducting ground states characterized by spontaneous phase gradients of the superconducting order parameter. These phase gradients no…
Spontaneous splitting of d-wave surface states: Circulating currents or edge magnetization?
Kevin Marc Seja, Niclas Wall-Wennerdal, Tomas Löfwander +1
Pair-breaking edges of -wave superconductors feature Andreev bound states at the Fermi energy. Since these states are energetically highly unfavorable they are susceptible to ef…