抽象的な
Strong coupling superconductivity and Coulomb screening
S.B.Ota
The electron-phonon coupling constant ï¬ has been calculated for A15 compounds assuming the width of the ï‡12 band as 80 meV. ï¬ has been found to be inversely proportional to the molecular weight. The Coulomb pseudopotential ïÂÂ* has been found to be negative for YBa2Cu3O7-x. Similar analysis for U6X superconductors showed that ïÂÂ* changes sign.
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