9 papers
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…
Metaphotonic Catalysis: Amorphous silicon metasurfaces encode photochemical activity
Elif Nur Dayi, Priscila Vensaus, Milad Sabzehparvar +3
Solar-to-fuel conversion can benefit from photoelectrodes with engineered light-matter interactions, yet most nanostructured designs provide limited control over the spatial and sp…
Photostationary Lifshitz transition in High Tc superconductor Bi2Sr2CaCu2O8+δ
Ji Dai, Lukas Hellbrück, Michele Puppin +12
To date, controlling the steady-state electronic band structure in high-Tc cuprate superconductors has been achieved primarily through chemical doping or magnetic fields. Here, we…
Excitons in WSe2 time-resolved ARPES: particle or oscillation?
Kai Wu, Michele Puppin, Andrea Marini
The time-resolved angle-resolved photoemission spectra of WSe, a paradigmatic transition metal dichalcogenide, are dominated by a transient signal that, after being initially o…
Impact of a Fano resonance on the measured transition time scale in solid state photoemission
Fei Guo, Dmitry Usanov, Eduardo B. Guedes +3
Fundamental quantum transition time scales are accessible through the spin polarization of photoelectrons coming from initially spin-degenerate states for solid-state materials . I…
Shot-to-shot acquisition ultrafast electron diffraction
Remi Claude, Michele Puppin, Bruce Weaver +3
We demonstrate a novel shot-to-shot acquisition method for optical pump - keV electron energy probe in ultrafast scattering experiments. We integrate a phase-locked acquisition sch…