SIZE AND GRAIN-DISTRIBUTION EFFECTS IN ELECTRONIC PROPERTIES OF TWO-DIMENSIONAL NANOCRYSTALLINE RECTANGLE SYSTEMS
YAN XIAO-HONG (颜晓红)a, YANG QI-BIN (杨奇斌)a, DUAN ZHU-PING (段祝平)b, ZHANG LI-DE (张立德)c
a Department of Physics, Xiangtan University, Xiangtan 411105, China; b Institute of Mechanics, Academia Sinica, Beijing 100080, China; c Institute of Solid State Physics, Academia Sinica, Hefei 230031, China
Abstract According to the structural characters of real nanostructured systems, a model for two-dimensional nanostructured systems has been proposed. By developing a renormalization-group Green's function scheme, local electronic density of states at a type of crystallire sites is presented on the pure hopping model. It is found that the changes of all the grain-distribution rules, the average atomic number and the atomic interaction are connected with the spectral structures of nanostructured systems. However, bule shifts of the spectra of nanostruetured systems seem to be modulated mainly by the changes of the bond-parameters which are correlated with the lattice distortions of the nano-sized grains.
Received: 20 April 1998
Accepted manuscript online:
PACS:
73.22.-f
(Electronic structure of nanoscale materials and related systems)
Fund: Project supported by a grant for Key Research in the Climbing Program from the State Science and Technology Commission of China, and partly by the Natural Science Foundation of Hunan province, China.
Cite this article:
YAN XIAO-HONG (颜晓红), YANG QI-BIN (杨奇斌), DUAN ZHU-PING (段祝平), ZHANG LI-DE (张立德) SIZE AND GRAIN-DISTRIBUTION EFFECTS IN ELECTRONIC PROPERTIES OF TWO-DIMENSIONAL NANOCRYSTALLINE RECTANGLE SYSTEMS 1998 Acta Physica Sinica (Overseas Edition) 7 905
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