2.6k citations · 3.7k across the 7 of their papers we have counts for
7 papers
Ni(111)|Graphene|h-BN Junctions as Ideal Spin Injectors
Volodymyr M. Karpan, Petr A. Khomyakov, Gianluca Giovannetti +2
Deposition of graphene on top of hexagonal boron nitride (h-BN) was very recently demonstrated while graphene is now routinely grown on Ni. Because the in-plane lattice constants o…
Theoretical prediction of perfect spin filtering at interfaces between close-packed surfaces of Ni or Co and graphite or graphene
V. M. Karpan, P. A. Khomyakov, A. A. Starikov +6
The in-plane lattice constants of close-packed planes of fcc and hcp Ni and Co match that of graphite almost perfectly so that they share a common two dimensional reciprocal space.…
Doping graphene with metal contacts
G. Giovannetti, P. A. Khomyakov, G. Brocks +3
Making devices with graphene necessarily involves making contacts with metals. We use density functional theory to study how graphene is doped by adsorption on metal substrates and…
Graphite and graphene as perfect spin filters
V. M. Karpan, G. Giovannetti, P. A. Khomyakov +6
Based upon the observations (i) that their in-plane lattice constants match almost perfectly and (ii) that their electronic structures overlap in reciprocal space for one spin dire…
Influence of Roughness and Disorder on Tunneling Magnetoresistance
P. X. Xu, V. M. Karpan, K. Xia +3
A systematic, quantitative study of the effect of interface roughness and disorder on the magnetoresistance of FeCovacuumFeCo magnetic tunnel junctions is presented based upo…
Conductance calculations for quantum wires and interfaces: mode matching and Green functions
P. A. Khomyakov, G. Brocks, V. Karpan +2
Landauer's formula relates the conductance of a quantum wire or interface to transmission probabilities. Total transmission probabilities are frequently calculated using Green func…