| A POSSIBLE SOLITON-LIKE POLARON MODEL FOR SUPERCONDUCTORS Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe, Ni) |
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| 引用本文： | 王忆,陈传誉,黄效吾,汪克林.A POSSIBLE SOLITON-LIKE POLARON MODEL FOR SUPERCONDUCTORS Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe, Ni)[J].中国物理 B,1999,8(3):193-198. |
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| 作者姓名： | 王忆 陈传誉 黄效吾 汪克林 |
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| 作者单位： | Department of Physics, Guangzhou Teachers College, Guangzhou 510400, China;Department of Physics, Guangzhou Teachers College, Guangzhou 510400, China;Department of Physics, Anhui University, Hefei 230039, China;Center for Fundamental Physics, University of Science and Technology of China, Hefei 230026, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 19804009), and the Natural Science Foundation of Guangdong Province (Grant No. 974199), China. |
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| 摘 要： | Using 1+1 soliton-like polaron model of a deformable continuum, the critical temperature and the energy gap in high-temperature superconductors Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe,Ni) are studied in the framework of finite temperature Green's function theory. The ratio 2Δ/kBTc=3.9 is obtained. Theoretical results are found in good agreement with the experimental data.
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