5 papers · 1 filter
X-ray driven displacive excitation of coherent phonons
Oleg Dogadov, Remi Claude, Christoph Emeis +29
Modulating electron-phonon coupling offers a route to control structural displacements and tune material functionality. Valence-to-conduction band transitions, however, provide lim…
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.…
Coherent Phonon-Driven Band Renormalizations in 1T-MoTe
Carl E. Jensen, Christoph Emeis, Stephan Jauernik +3
Here, we investigate phonon mode- and electron band-selective electron-phonon couplings in centrosymmetric 1T-MoTe using time- and angle-resolved photoemission spectroscopy…
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 Phonons and Quasiparticle Renormalization in Semimetals from First Principles
C. Emeis, S. Jauernik, S. Dahiya +5
Coherent phonons, light-induced coherent lattice vibrations in solids, provide a powerful route to engineer structural and electronic degrees of freedom using light. In this manusc…