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Velocity-modulation control of electron-wave propagation in graphene
Arnaud Raoux, Marco Polini, Reza Asgari +3
Wave propagation control by spatial modulation of velocity has a long history in optics and acoustics. We address velocity-modulation control of electron wave propagation in graphe…
Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions
Fabrizio Dolcini, Diego Rainis, Fabio Taddei +3
We demonstrate that perfect conversion between charged supercurrents in superconductors and neutral supercurrents in electron-hole pair condensates is possible via a new Andreev-li…
Electron-electron interactions in graphene bilayers
Fan Zhang, Hongki Min, Marco Polini +1
Electrons most often organize into Fermi-liquid states in which electron-electron interactions play an inessential role. A well known exception is the case of one-dimensional (1D)…
Linear response of doped graphene sheets to vector potentials
A. Principi, Marco Polini, G. Vignale
A two-dimensional gas of massless Dirac fermions (MDFs) is a very useful model to describe low-energy electrons in monolayer graphene. Because the MDF current operator is directly…
Dynamical response functions and collective modes of bilayer graphene
Giovanni Borghi, Marco Polini, Reza Asgari +1
Bilayer graphene (BLG) has recently attracted a great deal of attention because of its electrically tunable energy gaps and its unusual electronic structure. In this Letter we pres…
Engineering artificial graphene in a two-dimensional electron gas
M. Gibertini, A. Singha, V. Pellegrini +5
At low energy, electrons in doped graphene sheets behave like massless Dirac fermions with a Fermi velocity which does not depend on carrier density. Here we show that modulating a…