3 papers
cond-mat.mes-hall2026
Valley separation of photoexcited carriers in bilayer graphene
T. J. Osborne, M. E. Portnoi, E. Mariani
We derive the angular generation density of photoexcited carriers in gapless and gapped Bernal bilayer graphene. Exploiting the strong anisotropy of the band structure of bilayer g…
cond-mat.mes-hall2024
Designer gapped and tilted Dirac cones in lateral graphene superlattices
A. Wild, R. R. Hartmann, E. Mariani +1
We show that a planar array of bipolar waveguides in graphene can be used to engineer gapped and tilted two-dimensional Dirac cones within the electronic band structure. The presen…
cond-mat.mes-hall2024
Failure of the Mott's formula for the Thermopower in Carbon Nanotubes
A. V. Kavokin, M. E. Portnoi, A. A. Varlamov +1
Well-known Mott's formula links the thermoelectric power characterised by Seebeck coefficient to conductivity. We calculate analytically the thermoelectric current and Seebeck coef…