Anti-Correlation between Energy-Gap and Phonon Energy for Cuprate Bi2212 Superconductor  

作　　者：范巍 

机构地区：[1]Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031

出　　处：《Chinese Physics Letters》2008年第6期2217-2220,共4页中国物理快报（英文版）

基　　金：Supported by the Knowledge Innovation Project of Chinese Academy of Sciences, and the National Natural Science Foundation of China.

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.

关 键 词：supernova explosion proto-neutron star shock wave 

分 类 号：O511[理学—低温物理]