超导体Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe, Ni)可能的类孤子极化子模型

Acta Physica Sinica (overseas Edition) Pub Date : 1999-03-01 DOI:10.1088/1004-423X/8/3/006

W. Yi, Cheng Chuanyu, Hu Xiaowu, W. Kelin

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引用次数: 0

摘要

利用可变形连续体的1+1类孤子极化子模型，在有限温度格林函数理论的框架下，研究了高温超导体Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe, Ni)的临界温度和能隙。得到比值2Δ/kBTc=3.9。理论结果与实验数据吻合较好。

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A possible soliton-like polaron model for superconductors Y1-xCaxBa2Cu3-xMxO7-δ(M=Fe, Ni)

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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Acta Physica Sinica (overseas Edition)

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