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5 papers · 2 filters
Strongly temperature dependent resistance of meander-patterned graphene
G. Yu. Vasileva, D. Smirnov, Yu. B. Vasilyev +5
We have studied the electronic properties of epitaxial graphene devices patterned in a meander shape with the length up to a few centimeters and the width of few tens of microns. T…
Nonequilibrium mesoscopic conductance fluctuations as the origin of 1/f noise in epitaxial graphene
Cay-Christian Kalmbach, Franz Josef Ahlers, Jürgen Schurr +6
We investigate the 1/f noise properties of epitaxial graphene devices at low temperatures as a function of temperature, current and magnetic flux density. At low currents, an expon…
Electron interference in ballistic graphene nanoconstrictions
Jens Baringhaus, Mikkel Settnes, Johannes Aprojanz +3
We have realized nanometer size constrictions in ballistic graphene nanoribbons grown on sidewalls of SiC mesa structures. The high quality of our devices allows the observation of…
Strong suppression of shot noise in a feedback-controlled single-electron transistor
T. Wagner, P. Strasberg, J. C. Bayer +3
Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements but also because of its novel applic…
Two-dimensional crossover and strong coupling of plasmon excitations in arrays of one-dimensional atomic wires
Timo Lichtenstein, Julian Aulbach, Jörg Schäfer +3
The collective electronic excitations of arrays of Au chains on regularly stepped Si(553) and Si(775) surfaces were studied using electron loss spectroscopy with simultaneous high…