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Infrared nanoscopy of Dirac plasmons at the graphene-SiO2 interface
Zhe Fei, Gregory O. Andreev, Wenzhong Bao +13
We report on infrared (IR) nanoscopy of 2D plasmon excitations of Dirac fermions in graphene. This is achieved by confining mid-IR radiation at the apex of a nanoscale tip: an appr…
Quenching of the quantum Hall effect in graphene with scrolled edges
Alessandro Cresti, Michael M. Fogler, Francisco Guinea +2
Edge nanoscrolls are shown to strongly influence transport properties of suspended graphene in the quantum Hall regime. The relatively long arc length of the scrolls in combination…
Near-field spectroscopy of silicon dioxide thin films
Lingfeng M. Zhang, Gregory O. Andreev, Zhe Fei +6
We analyze the results of scanning near-field infrared spectroscopy performed on thin films of a-SiO2 on Si substrate. The measured near-field signal exhibits surface-phonon resona…
A model of large volumetric capacitance in graphene supercapacitors based on ion clustering
Brian Skinner, M. M. Fogler, B. I. Shklovskii
Electric double layer supercapacitors are promising devices for high-power energy storage based on the reversible absorption of ions into porous, conducting electrodes. Graphene is…
Two-Dimensional Electrostatic Lattices for Indirect Excitons
Mikas Remeika, Michael M. Fogler, Leonid V. Butov +2
We report on a method for the realization of two-dimensional electrostatic lattices for excitons using patterned interdigitated electrodes. Lattice structure is set by the electrod…
Spontaneous Coherence in a Cold Exciton Gas
Alexander A. High, Jason R. Leonard, Aaron T. Hammack +5
Excitons, bound pairs of electrons and holes, form a model system to explore the quantum physics of cold bosons in solids. Cold exciton gases can be realized in a system of indirec…