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Electronic structure and Peierls instability in graphene nanoribbons sculpted in graphane
Valentina Tozzini, Vittorio Pellegrini
Graphene nanoribbons are semiconductor nanostructures with great potentials in nanoelectronics. Their realization particularly with small lateral dimensions below a few nanometers,…
A Phase Diagram for Quantum Hall Bilayers with Strong Inter-layer Correlation
Biswajit Karmakar, Vittorio Pellegrini, Aron Pinczuk +2
Inter-layer excitonic coherence in a quantum Hall bilayer with negligible tunneling is monitored by measurements of low-lying spin excitations. At new quasiparticle excita…
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…
Tuning non-linear charge transport between integer and fractional quantum Hall states
Stefano Roddaro, Nicola Paradiso, Vittorio Pellegrini +3
Controllable point junctions between different quantum Hall phases are a necessary building block for the development of mesoscopic circuits based on fractionally-charged quasipart…
A molecular state of correlated electrons in a quantum dot
Sokratis Kalliakos, Massimo Rontani, Vittorio Pellegrini +6
Correlation among particles in finite quantum systems leads to complex behaviour and novel states of matter. One remarkable example is predicted to occur in a semiconductor quantum…