Electron-phonon coupling as a mechanism for high-temperature superconductivity |
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| Authors: | W W Fuller-Mora S A Wolf and V Z Kresin |
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| Affiliation: | (1) Naval Research Laboratory, 20375 Washington, DC;(2) University of California at Berkeley, 94720 Berkeley, California |
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| Abstract: | We have solved the Eliashberg gap equations which are valid for arbitrary phonon frequency, ( ph), electron-phonon coupling constant, ( ), and screened Coulomb interaction, (
*). We have used values of (ph),, and (
*) appropriate to the cuprate superconductors, and calculated the density of states, the pair potential., and the value of the gap at T=0 K. Using the linearized Eliashberg equations in the matrix representation, we have calculatedT
c
and 2 /k T
c
. We have found that we can account for the highT
c
's in the cuprates with reasonable values for,
*, and ph. |
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| Keywords: | Cuprate superconductors superconducting energy gap superconducting transition temperature |
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