4 papers
Nonlinear electron-phonon coupling drives light-induced symmetry switching in charge-density waves
Christoph Emeis, Fabio Caruso
Ultrafast optical excitation in charge-density wave (CDW) crystals can transiently suppress long-range order, driving the lattice toward higher symmetry on femtosecond timescales.…
Watching Polarons Form in Real Time
Victor Garcia-Herrero, Christoph Emeis, Zhenbang Dai +3
Polaron formation in pump-probe experiments is an inherently non-equilibrium phenomenon, driven by the ultrafast coupled dynamics of electrons and phonons, and culminating in the e…
Coherent phonon control beyond amplitude saturation in a sliding ferroelectric
Jan Gerrit Horstmann, Christoph Emeis, Andrin Caviezel +5
The breakdown of Hooke's law marks the onset of nonlinear behaviour: when displacements become large, restoring forces weaken and conventional proportionality fails. In quantum mat…
Origin of phonon decoherence
Yiming Pan, Christoph Emeis, Stephan Jauernik +2
Phonon decoherence determines the characteristic timescales over which coherent lattice vibrations decay, making it a crucial process for understanding the non-equilibrium dynamics…