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24 papers · 2 filters
Role of electronic excitations in magneto-Raman spectra of graphene
Oleksiy Kashuba, Vladimir I. Fal'ko
We investigate the signature of the low-energy electronic excitations in the Raman spectrum of monolayer and bilayer graphenes. The dominant contribution to the Raman spectra is du…
Cloning of Dirac fermions in graphene superlattices
L. A. Ponomarenko, R. V. Gorbachev, G. L. Yu +15
Lateral superlattices have attracted major interest as this may allow one to modify spectra of two dimensional electron systems and, ultimately, create materials with tailored elec…
Multilayer graphenes with mixed stacking structure: interplay of Bernal and rhombohedral stacking
Mikito Koshino, Edward McCann
We study the electronic structure of multilayer graphenes with a mixture of Bernal and rhombohedral stacking and propose a general scheme to understand the electronic band structur…
Measurement of Filling-Factor-Dependent Magnetophonon Resonances in Graphene Using Raman Spectroscopy
Y. Kim, J. M. Poumirol, A. Lombardo +9
We perform polarization-resolved Raman spectroscopy on graphene in magnetic fields up to 45T. This reveals a filling-factor-dependent, multi-component anticrossing structure of the…
Generic Miniband Structure of Graphene on a Hexagonal Substrate
J. R. Wallbank, A. A. Patel, M. Mucha-Kruczynski +2
Using a general symmetry-based approach, we provide a classification of generic miniband structures for electrons in graphene placed on substrates with the hexagonal Bravais symmet…
Non-equilibrium transport response from equilibrium transport theory
V. M. García-Suárez, J. Ferrer
We propose a simple scheme that describes accurately essential non-equilibrium effects in nanoscale electronics devices using equilibrium transport theory. The scheme, which is bas…