690 citations · 1.9k across the 10 of their papers we have counts for
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New Generation of Massless Dirac Fermions in Graphene under External Periodic Potentials
Cheol-Hwan Park, Li Yang, Young-Woo Son +2
We show that new massless Dirac fermions are generated when a slowly varying periodic potential is applied to graphene. These quasiparticles, generated near the supercell Brillouin…
Electron Beam Supercollimation in Graphene Superlattices
Cheol-Hwan Park, Young-Woo Son, Li Yang +2
Although electrons and photons are intrinsically different, importing useful concepts in optics to electronics performing similar functions has been actively pursued over the last…
Excitonic Effects in the Optical Spectra of Graphene Nanoribbons
Li Yang, Marvin L. Cohen, Steven G. Louie
We present a first-principles calculation of the optical properties of armchair-edged graphene nanoribbons (AGNRs) with many-electron effects included. The reduced dimensionality o…