% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Ishida:22345,
author = {Ishida, H. and Liebsch, A.},
title = {{F}irst-order metal-to-metal phase transition and
non-{F}ermi-liquid behavior in a two-dimensional {M}ott
insulating layer adsorbed on a metal surface},
journal = {Physical review / B},
volume = {85},
number = {4},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-22345},
pages = {045112},
year = {2012},
note = {H.I. thanks the Alexander von Humboldt Foundation for
support during his stay in Germany. The work of H. I. was
supported by a Grant-in-Aid for Scientific Research (No.
20540191) from the Japan Society for the Promotion of
Science.},
abstract = {The electronic structure of a two-dimensional Mott
insulating layer in contact with a semi-infinite metal
substrate is studied within cluster dynamical mean field
theory. For this purpose, the overlayer forming a square
lattice is divided into an array of (2 x 2)-site clusters in
which interatomic electron correlations are taken into
account explicitly. In striking contrast to the single-site
approximation, where substrate-adsorbate hybridization gives
rise to Fermi-liquid properties at low temperature,
short-range correlations lead to bad metallicity in a much
wider parameter range as a function of temperature and
overlayer-substrate coupling strength. The (pi,0) component
of the self-energy exhibits a finite low-energy scattering
rate, which increases with decreasing temperature even when
hybridization between overlayer and substrate states is as
large as the nearest-neighbor hopping energy within the
overlayer. In addition, at moderate overlayer-substrate
coupling and in the presence of the second nearest-neighbor
hopping interaction, the overlayer undergoes a first-order
phase transition between two correlated metallic phases when
electron doping is increased by changing the chemical
potential. These results suggest that normal metal proximity
effects are strongly modified when spatial fluctuations in
the overlayer are taken into consideration.},
keywords = {J (WoSType)},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000299118000004},
doi = {10.1103/PhysRevB.85.045112},
url = {https://juser.fz-juelich.de/record/22345},
}