29 citations · 67 across the 6 of their papers we have counts for
6 papers
Impurity scattering and size quantization effects in a single graphene nanoflake
Julia Tesch, Philipp Leicht, Felix Blumenschein +4
By using Fourier-transform scanning tunneling spectroscopy we measure the interference patterns produced by the impurity scattering of confined Dirac quasiparticles in epitaxial gr…
Conductance footprints of impurity scattering in graphene nanoribbons
Anders Bergvall, Tomas Lofwander
We report a detailed analytic investigation of the interplay between size quantization and local scattering centers in armchair graphene nanoribbons, as seen in the conductance. Th…
Destroyed quantum Hall effect in graphene with [0001] tilt grain boundaries
Anders Bergvall, Johan M. Carlsson, Tomas Lofwander
The reason why the half-integer quantum Hall effect (QHE) is suppressed in graphene grown by chemical vapor deposition (CVD) is unclear. We propose that it might be connected to ex…
Spectral footprints of impurity scattering in graphene nanoribbons
Anders Bergvall, Tomas Lofwander
We report a detailed investigation of the interplay between size quantization and local scattering centers in graphene nanoribbons, as seen in the local density of states. The spec…
Non-Makovian decoherence of a two-level system weakly coupled to a bosonic bath
A. A. Slutskin, K. N. Bratus', A. Bergvall +1
Bloch-Redfield equation is a common tool for studying evolution of qubit systems weakly coupled to environment. We investigate the accuracy of the Born approximation underlying thi…
Graphene Nanogap for Gate Tunable Quantum Coherent Single Molecule Electronics
A. Bergvall, K. Berland, P. Hyldgaard +2
We present atomistic calculations of quantum coherent electron transport through fulleropyrrolidine terminated molecules bridging a graphene nanogap. We predict that three difficul…