803 citations · 3.1k across the 40 of their papers we have counts for
7 papers · 1 filter
Non-trivial retardation effects in dispersion forces: From anomalous distance dependence to novel traps
Johannes Fiedler, Kristian Berland, Fabian Spallek +4
In the study of dispersion forces, nonretarded, retarded and thermal asymptotes with their distinct scaling laws are regarded as cornerstone results governing interactions at diffe…
An analysis of van der Waals density functional components: Binding and corrugation of benzene and C60 on boron nitride and graphene
Kristian Berland, Per Hyldgaard
The adsorption of benzene and C60 on graphene and boron nitride (BN) is studied using density functional theory with the non-local correlation functional vdW-DF. By comparing these…
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…
Polarization-balanced design of AlN/GaN heterostructures: Application to double-barrier structures
Kristian Berland, Thorvald G Andersson, Per Hyldgaard
Inversion- and depletion-regions generally form at the interfaces between doped leads (cladding layers) and the active region of polar heterostructures like AlN/GaN and other nitri…
A general solution to the Schrödinger-Poission equation for charged hard wall: Application to potential profile of an AlN/GaN barrier structure
Kristian Berland
A general, system-independent formulation of the parabolic Schrödinger-Poisson equation is presented for a charged hard wall in the limit of complete screening by the ground state.…
Temperature stability of intersubband transitions in AlN/GaN quantum wells
Kristian Berland, Martin Stattin, Rashid Farivar +5
Temperature dependence of intersubband transitions in AlN/GaN multiple quantum wells grown with molecular beam epitaxy is investigated both by absorption studies at different tempe…
Rings sliding on a honeycomb network: Adsorption contours, interactions, and assembly of benzene on Cu(111)
K. Berland, T. L. Einstein, P. Hyldgaard
Using a van der Waals density functional (vdW-DF) [Phys. Rev. Lett. 92, 246401 (2004)], we perform ab initio calculations for the adsorption energy of benzene (Bz) on Cu(111) as a…