摘要
Using the electron-phonon mechanism, we explain the spatial anti-correlation between the energy-gap and the energy of phonon mode for cuprate superconductor found in tunnelling spectrum by STM measurements of Bi2212, which is the direct effect of an important relationship （or constraint） Ⅰ =const, where Ⅰ is superconducting parameters. By relaxing above constraint, we study the correlation of energy gap and phonon energy when Ⅰ has a distribution. We calculate a map of transition temperature in space constructing by phonon energy and the parameter of electron-phonon interaction, which is helpful for understanding of the relation.
Using the electron-phonon mechanism, we explain the spatial anti-correlation between the energy-gap and the energy of phonon mode for cuprate superconductor found in tunnelling spectrum by STM measurements of Bi2212, which is the direct effect of an important relationship （or constraint） Ⅰ =const, where Ⅰ is superconducting parameters. By relaxing above constraint, we study the correlation of energy gap and phonon energy when Ⅰ has a distribution. We calculate a map of transition temperature in space constructing by phonon energy and the parameter of electron-phonon interaction, which is helpful for understanding of the relation.
基金
Supported by the Knowledge Innovation Project of Chinese Academy of Sciences, and the National Natural Science Foundation of China.
