SELF-INTERACTION-CORRECTED LOCAL-SPIN-DENSITY-FUNCTIONAL THEORY FOR STRONGLY CORRELATED ELECTRON-SYSTEMS

被引:0
|
作者
MIYAZAKI, T [1 ]
ISHII, Y [1 ]
TERAKURA, K [1 ]
机构
[1] HIMEJI INST TECHNOL,FAC SCI,DEPT MAT SCI,OSAKA 67812,JAPAN
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中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Svane and Gunnarsson's method of the self-interaction corrected local-spin-density approximation (SIC-LSDA) in the density-functional theory was applied to the one-dimensional Hubbard model and the two-dimensional pd Hubbard model in order to study the one particle energy spectrum. The calculated energy band in the SIC-LSDA gives a reasonable band gap in contrast to serious underestimation of it by the LSDA and slight overestimation by the Hartree-Fock approximation. Behavior of SIC localized orbitals is also discussed.
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页码:173 / 185
页数:13
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