2 papers
cond-mat.mes-hall2025
Direct observation of locally modified excitonic effect within a moiré unit cell in twisted bilayer graphene
Ming Liu, Ryosuke Senga, Masanori Koshino +2
Bilayer graphene, forming moiré superlattices, possesses distinct electronic and optical properties derived from the hybridization of energy band and the emergence of van Hove sin…
cond-mat.mtrl-sci2025
Excitonic effects in energy loss spectra of freestanding graphene
Alberto Guandalini, Ryosuke Senga, Yung-Chang Lin +8
In this work we perform electron energy-loss spectroscopy (EELS) of freestanding graphene with high energy and momentum resolution to disentangle the quasielastic scattering from t…