• Publications
  • Influence
Chirality and correlations in graphene.
TLDR
Graphene's exchange and random-phase-approximation correlation energies are evaluated to show that the tendency of Coulomb interactions in lightly doped graphene to favor states with larger net chirality leads to suppressed spin and charge susceptibilities. Expand
Double-layer graphene and topological insulator thin-film plasmons
We present numerical and analytical results for the optical and acoustic plasmon collective modes of coupled massless-Dirac two-dimensional electron systems. Our results apply to topologicalExpand
Observation of Plasmarons in Quasi-Freestanding Doped Graphene
TLDR
By measuring the spectral function of charge carriers in quasi-freestanding graphene with angle-resolved photoemission spectroscopy, it is shown that at finite doping, this well-known linear Dirac spectrum does not provide a full description of the charge-carrying excitations. Expand
Tuning quantum nonlocal effects in graphene plasmonics
TLDR
Graphene plasmons are used, propagating at extremely slow velocities close to the electron Fermi velocity, to probe the nonlocal response of the graphene electron liquid, and a parameter-free match with the full quantum description of the massless Dirac electron gas is revealed. Expand
Effective screening and the plasmaron bands in Graphene.
Electron-plasmon coupling in graphene has recently been shown to give rise to a "plasmaron" quasiparticle excitation. The strength of this coupling has been predicted to depend on the effectiveExpand
Plasmons and Coulomb drag in Dirac-Schrödinger hybrid electron systems
We show that the plasmon spectrum of an ordinary two-dimensional electron gas (2DEG) hosted in a GaAs heterostructure is significantly modified when a graphene sheet is placed on the surface of theExpand
Graphene: A pseudochiral Fermi liquid
Abstract Doped graphene sheets are pseudochiral two-dimensional Fermi liquids with abnormal electron–electron interaction physics. We address graphene’s Fermi liquid properties quantitatively using aExpand
Modulation of electronic and mechanical properties of phosphorene through strain
We report a first-principles study on the elastic, vibrational, and electronic properties of the recently synthesized phosphorene. By calculating the Gr\"uneisen parameters, we evaluate the frequencyExpand
Plasmons and the spectral function of graphene
We report a theoretical study of the influence of electron-electron interactions on the one-particle Green's function of a doped graphene sheet based on the random-phase approximation and onExpand
Theory of strain in single-layer transition metal dichalcogenides
Strain engineering has emerged as a powerful tool to modify the optical and electronic properties of two-dimensional crystals. Here we perform a systematic study of strained semiconducting transitionExpand
...
1
2
3
4
5
...