3 papers
cond-mat.mes-hall2025
Momentum transfer in the ponderomotive potential of near-infrared laser pulses leads to sizable energy shifts and electron-wavepacket squeezing in time-resolved ARPES
Xinwei Zheng, Martin Weinelt, Christian Strüber
We observe momentum transfer in the ponderomotive potential of near-infrared (NIR) laser pulses in time- and angle-resolved photoemission spectroscopy (tr-ARPES) experiments with u…
cond-mat.other2025
Ultrafast non-equilibrium magnon generation and collapse of spin-orbit hybridization gaps in iron
Xinwei Zheng, Shabnam Haque, Christian Strüber +1
We distinguish between longitudinal and transverse spin excitations in the ultrafast response of iron by probing exchange splitting ÎEex and magnetic linear dichroism (MLD) in tim…
cond-mat.mes-hall2025
Magnon-mediated terahertz spin transport in metallic Gd|Pt stacks
Oliver Gueckstock, Tim Amrhein, Beatrice Andres +11
We study femtosecond spin transport in a Gd|Pt stack induced by a laser pulse. Remarkably, the dynamics of the spin current from Gd to Pt suggests that its dominant driving force i…