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@ARTICLE{Egami:867607,
author = {Egami, Yoshiyuki and Tsukamoto, Shigeru and Ono, Tomoya},
title = {{E}fficient calculation of self-energy matrices for
electron-transport simulations},
journal = {Physical review / B},
volume = {100},
number = {7},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-06228},
pages = {075413},
year = {2019},
abstract = {The computational cost of calculating the self-energy
matrices used in first-principles transport-property
calculations is proportional to the cube of the lateral
length of electrodes. Therefore, the clarification of
transport properties is difficult because the system size
increases when the transition region structure becomes
complicated owing to lattice defects such as adatoms,
substitutional doping, vacancies, and lattice distortions.
In this study we propose an improved procedure to calculate
the self-energy matrices in the electrodes to reduce
computational costs of electron-transport calculations
without degrading the accuracy. This procedure accurately
reproduces the self-energy matrices of the
supercell-structured electrodes from the generalized Bloch
states of the primitive unit cell. Furthermore, we carry out
electron-transport calculations on fluorine-adsorbed
graphene sheets connected to semi-infinite graphene
electrodes and find the dependence of the electron
transmission on the symmetry of the arrangement of adatoms
perpendicular to the transport direction.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
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:000479031500002},
doi = {10.1103/PhysRevB.100.075413},
url = {https://juser.fz-juelich.de/record/867607},
}