74 citations · 192 across the 7 of their papers we have counts for
7 papers
Hybridization of the amplitude mode in a confined fermionic superfluid
Cesar R. Cabrera, René Henke, Lukas Broers +5
In phase transitions, spontaneous symmetry breaking results in a non-zero order parameter and two collective excitations: the Goldstone and the amplitude mode. These modes, which d…
Equilibrium Parametric Amplification in Raman-Cavity Hybrids
H. P. Ojeda Collado, Marios H. Michael, Jim Skulte +2
Parametric resonances and amplification have led to extraordinary photoinduced phenomena in pump-probe experiments. While these phenomena manifest themselves in out-of-equilibrium…
Dynamical phases transitions in periodically driven Bardeen-Cooper-Schrieffer systems
H. P. Ojeda Collado, Gonzalo Usaj, C. A. Balseiro +2
We present a systematic study of the dynamical phase diagram of a periodically driven BCS system as a function of drive strength and frequency. Three different driving mechanism ar…
Emergent parametric resonances and time-crystal phases in driven BCS systems
H. P. Ojeda Collado, Gonzalo Usaj, C. A. Balseiro +2
We study the out-of-equilibrium dynamics of a Bardeen-Cooper-Schrieffer condensate subject to a periodic drive. We demonstrate that the combined effect of drive and interactions re…
Fate of dynamical phases of a BCS superconductor beyond the dissipationless regimen
H. P. Ojeda Collado, Gonzalo Usaj, José Lorenzana +1
The BCS model of an isolated superconductor initially prepared in a nonequilibrium state, predicts the existence of interesting dynamical phenomena in the time-dependent order para…
Population inversion and dynamical phase transitions in a driven superconductor
H. P. Ojeda Collado, José Lorenzana, Gonzalo Usaj +1
We consider a superconductor in which the density of states at the Fermi level or the pairing interaction is driven periodically with a frequency larger than the superconducting ga…
Experimental approval of the extended flat bands and gapped subbands in rhombohedral multilayer graphene
Y. Henni, H. P. Ojeda Collado, K. Nogajewski +6
Graphene layers are known to stack in two stable configurations, namely ABA or ABC stacking, with drastically distinct electronic properties. Unlike the ABA stacking, little has be…