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Colossal infrared and terahertz magneto-optical activity in a two-dimensional Dirac material
Ievgeniia O. Nedoliuk, Sheng Hu, Andre K. Geim +1
When two-dimensional electron gases (2DEGs) are exposed to magnetic field, they resonantly absorb electromagnetic radiation via electronic transitions between Landau levels (LLs).…
Negative local resistance caused by viscous electron backflow in graphene
D. A. Bandurin, I. Torre, R. Krishna Kumar +10
Graphene hosts a unique electron system in which electron-phonon scattering is extremely weak but electron-electron collisions are sufficiently frequent to provide local equilibriu…
Gate tunable charged-phonon effect in bilayer graphene
A. B. Kuzmenko, L. Benfatto, E. Cappelluti +5
We observe a giant increase of the infrared intensity and a softening of the in-plane antisymmetric phonon mode Eu (~0.2 eV) in bilayer graphene as a function of the gate-induced d…
Infrared spectroscopy of electronic bands in bilayer graphene
A. B. Kuzmenko, E. van Heumen, D. van der Marel +4
We present infrared spectra (0.1-1 eV) of electrostatically gated bilayer graphene as a function of doping and compare it with tight binding calculations. All major spectral featur…