Repulsive effect of low frequency phonons on superconductivity |
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| Authors: | Philip B Allen |
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| Institution: | Department of Physics, State University of New York, Stony Brook, New York 11790, USA |
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| Abstract: | The Eliashberg integral equations are investigated to determine the effect of low frequency phonons on the superconducting transition temperature Tc. It is found that phonons of frequency less than Tc are repulsive (diminish Tc) while phonons of higher frequency have a diminished attraction unless the frequency is substantially above Tc. Various implications are discussed concerning observed values of Tc and predicted mechanisms for raising Tc. |
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