4 papers
Real-space microscopic description of laser-pulse induced melting of superconductivity
Karl Bergson Hallberg, Guillermo Nava Antonio, Chiara Ciccarelli +1
Quenching quantum order via laser pulses has proven a useful tool to access exotic physical effects in systems that are strongly perturbed out of equilibrium. However, theoretical…
Real-time detection of critical slowing-down at the superconducting phase transition
Guillermo Nava Antonio, Théo Courtois, Corentin Pfaff +5
We employ optical pump-THz probe spectroscopy to chart the ultrafast superconductivity suppression in NbN over a broad range of excitation fluences. Our measurements uncover a pron…
Origin of the laser-induced picosecond spin current across magnetization compensation in ferrimagnetic GdCo
Guillermo Nava Antonio, Quentin Remy, Jun-Xiao Lin +8
The optical manipulation of magnetism enabled by rare earth-transition metal ferrimagnets holds the promise of ultrafast, energy efficient spintronic technologies. This work invest…
Ultra-high spin emission from antiferromagnetic FeRh
Dominik Hamara, Mara Strungaru, Jamie Massey +10
An antiferromagnet emits spin currents when time-reversal symmetry is broken. This is typically achieved by applying an external magnetic field below and above the spin-flop transi…