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cond-mat.mtrl-sci2024
Ultrafast terahertz conductivity in epitaxial graphene nanoribbons: an interplay between photoexcited and secondary hot carriers
Arvind Singh, Hynek NÄmec, Jan Kunc +1
Optical pump-terahertz probe spectroscopy has been used to investigate ultrafast photo-induced charge carrier transport in 3.4 m wide graphene ribbons upon scaling the optical…
cond-mat.mtrl-sci2024
Photon-assisted ultrafast electron-hole plasma expansion in direct band semiconductors
T. Troha, F. KlimoviÄ, T. Ostatnický +2
Time-resolved terahertz spectroscopy is used to investigate formation and ultrafast long-distance propagation of electron-hole plasma in strongly photoexcited GaAs and InP. The obs…
cond-mat.mtrl-sci2024
Nanoscale Terahertz Conductivity and Ultrafast Dynamics of Terahertz Plasmons in Periodic Arrays of Epitaxial Graphene Nanoribbons
Arvind Singh, Hynek NÄmec, Jan Kunc +1
Dynamics of plasmons in nanoribbons of (hydrogen intercalated) quasi-free-standing single layer graphene is studied by terahertz spectroscopy both in the steady state and upon phot…