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16 papers · 2 filters
Gaps tunable by electrostatic gates in strained graphene
T. Low, F. Guinea, M. I. Katsnelson
We show that when the pseudomagnetic fields created by long wavelength deformations are appropriately coupled with a scalar electric potential, a significant energy gap can emerge…
Theory of Bernstein Modes in Graphene
R. Roldan, M. O. Goerbig, J. -N. Fuchs
We present a theoretical description of Bernstein modes that arise as a result of the coupling between plasmon-like collective excitations (upper-hybrid mode) and inter-Landau-leve…
Flexuron, a self-trapped state of electron in crystalline membranes
M. I. Katsnelson
Self-trapping of an electron due to its interaction with bending fluctuations in a flexible crystalline membrane is considered. Due to the dependence of the electron energy on the…
Quantum Hall activation gaps in bilayer graphene
E. V. Kurganova, A. J. M. Giesbers, R. V. Gorbachev +4
We have measured the quantum Hall activation gaps in bilayer graphene at filling factors and in high magnetic fields up to 30 T. We find that energy levels can be…
Electronic Transport in Disordered Bilayer and Trilayer Graphene
Shengjun Yuan, Hans De Raedt, Mikhail I. Katsnelson
We present a detailed numerical study of the electronic transport properties of bilayer and trilayer graphene within a framework of single-electron tight-binding model. Various typ…
Generation of energy selective excitations in quantum Hall edge states
C. Leicht, P. Mirovsky, B. Kaestner +7
We operate an on-demand source of single electrons in high perpendicular magnetic fields up to 30T, corresponding to a filling factor below 1/3. The device extracts and emits singl…