TY - JOUR
T1 - Electronic state on the surface in the strongly correlated electron systems
AU - Onari, Seiichiro
AU - Hata, Tetsuya
AU - Tanaka, Yukio
AU - Inoue, Jun ichiro
N1 - Funding Information:
This work was supported by a Grant-in-Aid for 21st Century COE “Frontiers of Computational Science”. Numerical calculations were performed at the supercomputer center, ISSP.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/12
Y1 - 2008/12
N2 - In order to clarify the tunneling spectroscopy in high-Tc cuprates, we study electronic state of the surface in the strongly correlated electron systems. First, we obtain Green's function of strongly correlated normal bulk system using the fluctuation exchange (FLEX) approximation. Next, we insert infinite potential into the bulk system and obtain Green's function of surface. We find that the density of states (DOS) in strongly correlated bulk systems are different from that on the surface, and the difference decreases as the magnitude of Coulomb interaction (U) increases.
AB - In order to clarify the tunneling spectroscopy in high-Tc cuprates, we study electronic state of the surface in the strongly correlated electron systems. First, we obtain Green's function of strongly correlated normal bulk system using the fluctuation exchange (FLEX) approximation. Next, we insert infinite potential into the bulk system and obtain Green's function of surface. We find that the density of states (DOS) in strongly correlated bulk systems are different from that on the surface, and the difference decreases as the magnitude of Coulomb interaction (U) increases.
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U2 - 10.1016/j.jpcs.2008.06.076
DO - 10.1016/j.jpcs.2008.06.076
M3 - Article
AN - SCOPUS:57049172368
SN - 0022-3697
VL - 69
SP - 3307
EP - 3309
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 12
ER -