On the Role of Apical Oxygens in High-T_c Cu-Oxides
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概要
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The role of apical oxygens in high-7". Cu-oxides has been ;tnalyzed based on theeffective Hamiltonian derived previously by the present autlvors. It turns out thatthese oxygens modulate notably the oxygen p-hole band structttre, which leads to theenhancement of the long-range hopping integrals of the Zhttng-Rice singlet. Thiseffect is further enhanced if tlte distance between apical 0 and in-plane Cu is reduced.This finding may relate to the remarkable experimental result Ivy Nlurayama e( at. ofthe strong pressure dependence of T. in the T' strttcture and its complete absence inthe T' structure.[high-7-.superconductivity, theory, effective I-[amiItonian,#-p model, /-7 model, ]l apical oxygens, pressture effects, t'l
- 社団法人日本物理学会の論文
- 1990-05-15
著者
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Fukuyama Hidetoshi
Institute For Solid State Physics The University Of Tokyo
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松川 宏
Department Of Physics Osaka University
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松川 忠
阪大理
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Matsukawa Hiroshi
Department Of Physics Nara Women's University
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Matsukawa Hiroshi
Department Of Biology School Of Education Waseda University
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FUKUYAMA Hidetoshi
Institute for Materials Research, Tohoku University
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