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Interaction driven charge transfer transitions in closely spaced graphene double layers
Kenneth A. Lin, Unmesh Ghorai, Kenji Watanabe +3
Charge transfer between two conductors is conventionally viewed as a single-particle process governed by electrostatics and band alignment. Using tunneling spectroscopy, we show th…
Miniband Generation by Surface Acoustic Waves
Eli Meril, Unmesh Ghorai, Tobias Holder +1
We introduce a new class of tunable periodic structures, formed by launching two obliquely propagating surface acoustic waves on a piezoelectric substrate that supports a two-dimen…
Moire bands in twisted double-layer graphene
R. Bistritzer, A. H. MacDonald
A moire pattern is formed when two copies of a periodic pattern are overlaid with a relative twist. We address the electronic structure of a twisted two-layer graphene system, show…
Transport Between Twisted Graphene Layers
Rafi Bistritzer, Allan H. MacDonald
Commensurate-incommensurate transitions are ubiquitous in physics and are often accompanied by intriguing phenomena. In few-layer graphene (FLG) systems, commensurability between h…
Electronic Cooling in Graphene
R. Bistritzer, A. H. MacDonald
Energy transfer to acoustic phonons is the dominant low-temperature cooling channel of electrons in a crystal.For cold neutral graphene we find that the weak cooling power of its a…
Comment on "Electron screening and excitonic condensation in double-layer graphene systems"
R. Bistritzer, H. Min, J. J. Su +1
The influence of screening on the condensed state of bilayer graphene is studied within the framework of the Thomas Fermi approximation. We find that screening has little effect on…
Influence of Disorder on Electron-Hole Pair Condensation in Graphene Bilayers
R. Bistritzer, A. H. MacDonald
Graphene bilayers can condense into a state with spontaneous interlayer phase coherence that supports dissipationless counterflow supercurrents. Here we address the influence of di…
Room-Temperature Superfluidity in Graphene Bilayers
Hongki Min, Rafi Bistritzer, Jung-Jung Su +1
Because graphene is an atomically two-dimensional gapless semiconductor with nearly identical conduction and valence bands, graphene-based bilayers are attractive candidates for hi…
The physical picture behind the oscillating sign of drag in high Landau levels
Rafi Bistritzer, Ady Stern
We consider the oscillating sign of the drag resistivity and its anomalous temperature dependence discovered experimentally in a bi-layer system in the regime of the integer quantu…