Superconductivity of the One-Dimensional d-p Model with p-p Transfer
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概要
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Using the numerical diagonalization rnethod, we investigate the one-dimensional d-p model,simulating a Cu-O linear chain with strong Coulomb repulsions. Considering the effect of thetransfer energy Z.. between the nearest neighbor oxygen-sites, we calculate the critical exponentof the correlation functions K. based on the Luttinger liquid relations and the ground stateenergy f0(</>) as a function of an external flux c/:t. We find that the transfer t,. increases thecharge susceptibility and the exponent K. in cooperation with the repulsion U,) at the Cu site.We also show that anomalous fltrx quantization occurs for K. >l. The superconducting regionis presented on a phase diagram of U.z vs. t.. plane.
- 社団法人日本物理学会の論文
- 1998-02-15
著者
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Ono Yoshiaki
Department Of Geriatric Dentistry Osaka Dental University
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Sano Kazuhiro
Department Of Physics Engineering Mie University
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