Vibronic origins of high T c |
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Authors: | John Hardy John Flocken |
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Institution: | 1. Department of Physics and Center for Electro-Optics , University of Nebraska at Lincoln , Lincoln, Nebraska, 68588, USA;2. Department of Physics , University of Nebraska at Omaha , Omaha, Nebraska, 68182, USA |
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Abstract: | In this paper we present a detailed development of our vibronic mechanism for the explanation of high temperature superconductivity. We first review the evidence for believing that some unified mechanism for “low” and “high” T c is required. We then develop the case for the existence of the double-well motions, required by our theory, in these systems, and proceed to develop our ideas further to the point of unifying, the T c ~ 100 K, and the T c ~ 40 K systems. We also advance a possible explanation of the anomalous isotope effects in these systems, and conclude with an extended discussion of non-cuprate systems and general criteria for high T c theories, including the gap to kT c ratio. |
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Keywords: | Superconductivity high T c phonons instabilities double wells structural transitions |
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