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@ARTICLE{Rsner:203256,
author = {Rösner, M. and Şaşıoğlu, E. and Friedrich, Christoph
and Blügel, S. and Wehling, T. O.},
title = {{W}annier function approach to realistic {C}oulomb
interactions in layered materials and heterostructures},
journal = {Physical review / B},
volume = {92},
number = {8},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2015-05237},
pages = {085102},
year = {2015},
abstract = {We introduce an approach to derive realistic Coulomb
interaction terms in freestanding layered materials and
vertical heterostructures from ab initio modeling of the
corresponding bulk materials. To this end, we establish a
combination of calculations within the framework of the
constrained random-phase approximation, Wannier function
representation of Coulomb matrix elements within some
low-energy Hilbert space, and continuum medium
electrostatics, which we call Wannier function continuum
electrostatics (WFCE). For monolayer and bilayer graphene we
reproduce full ab initio calculations of the Coulomb matrix
elements within an accuracy of 0.3 eV or better. We show
that realistic Coulomb interactions in bilayer graphene can
be manipulated on the eV scale by different dielectric and
metallic environments. A comparison to electronic phase
diagrams derived in M. M. Scherer et al. [Phys. Rev. B 85,
235408 (2012)] suggests that the electronic ground state of
bilayer graphene is a layered antiferromagnet and remains
surprisingly unaffected by these strong changes in the
Coulomb interaction.},
cin = {IAS-1 / PGI-1 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000358932600003},
doi = {10.1103/PhysRevB.92.085102},
url = {https://juser.fz-juelich.de/record/203256},
}