3 papers
cond-mat.mtrl-sci2019
Probing exciton dispersions of freestanding monolayer WSe2 by momentum resolved electron energy loss spectroscopy
Jinhua Hong, Ryosuke Senga, Thomas Pichler +1
Momentum resolved electron energy-loss spectroscopy was used to measure the dispersions of excitons in a free-standing monolayer of WSe2. Besides the parabolically dispersed valley…
cond-mat.mes-hall2019
Momentum Conserved Ultrafast Charge Transfer Dynamics of Interlayer Excitons in vdW Heterostructures
Pranjal Kumar Gogoi, Yung-Chang Lin, Ryosuke Senga +9
Heterostructures comprising van der Waals (vdW) stacked transition metal dichalcogenide (TMDC) monolayers are a fascinating class of two-dimensional (2D) materials with unique prop…
cond-mat.mtrl-sci2018
Position and momentum mapping of vibrations in graphene nanostructures in the electron microscope
Ryosuke Senga, Kazu Suenaga, Paolo Barone +3
Propagating atomic vibrational waves, phonons, rule important thermal, mechanical, optoelectronic and transport characteristics of materials. Thus the knowledge of phonon dispersio…