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9 papers · 2 filters
Bilayer-induced asymmetric quantum Hall effect in epitaxial graphene
Andrea Iagallo, Shinichi Tanabe, Stefano Roddaro +8
The transport properties of epitaxial graphene on SiC(0001) at quantizing magnetic fields are investigated. Devices patterned perpendicularly to SiC terraces clearly exhibit bilaye…
Highly confined low-loss plasmons in graphene-boron nitride heterostructures
Achim Woessner, Mark B. Lundeberg, Yuanda Gao +10
Graphene plasmons were predicted to possess ultra-strong field confinement and very low damping at the same time, enabling new classes of devices for deep subwavelength metamateria…
Critical point for the CAF-F phase transition at charge neutrality in bilayer graphene
S. Pezzini, C. Cobaleda, B. A. Piot +2
We report on magneto-transport measurements up to 30 T performed on a bilayer graphene Hall bar, enclosed by two thin hexagonal boron nitride flakes. Our high mobility sample exhib…
Quantum capacitance and Landau parameters of massless Dirac fermions in graphene
Reza Asgari, Mikhail I. Katsnelson, Marco Polini
We present extensive numerical results for the thermodynamic density of states (i.e. quantum capacitance) of a two-dimensional massless Dirac fermion fluid in a doped graphene shee…
Nonlinear transport and noise thermometry in quasi-classical ballistic point contacts
E. S. Tikhonov, M. Yu. Melnikov, D. V. Shovkun +3
We study nonlinear transport and non-equilibrium current noise in quasi-classical point contacts (PCs) defined in a low-density high-quality two-dimensional electron system in GaAs…
Multistability of a Josephson parametric amplifier coupled to a mechanical resonator
Olga Shevchuk, Rosario Fazio, Ya. M. Blanter
We study the dynamics of Josephson Parametric Amplifier (JPA) coupled to a mechanical oscillator, as realised with a dc Superconducting Quantum Interference Device (SQUID) with an…