Abstract The electronic structure of La1.85Sr0.15CuO4， as well as the two cases of substitution of Ga and Sn for Cu, has been studied by the recursion method. The change of hole concentration and the effective local magnetic moment have also been calculated. Our calculations show that Ga and Sn destroy the two-dimensional character of the CuO2 plane and lead to the disorder of the electronic structure, accompanied by the migration of electrons which canines the decrease of the hole concentration in the CuO2 planes. From our point of view, these changes may be responsible for the destruction of superconductivity of the Ga and Sn-doped systems.
Received: 15 March 1993
Accepted manuscript online:
(Saturation moments and magnetic susceptibilities)
Fund: Project supported by the Doctoral Program Foundation of Institution of Higher Education of China.
Cite this article:
FENG XIAO-BING (冯小兵), HAO XUE-JUN (郝学军), ZHANG LI-YUAN (章立源), WANG HUAI-YU (王怀玉) EFFECT OF THE SUBSTITUTION OF Ga AND Sn FOR Cu ON THE ELECTRONIC STRUCTURE AND SUPERCONDUCTIVITY OF La1.85Sr0.15CuO4 1994 Acta Physica Sinica (Overseas Edition) 3 190
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