Abstract
The crystal lattice of a complex compound may contain a subsystem of ions with each one possessing two close equilibrium positions (double-well structure). For example, the oxygen ions in the cuprates form such a subsystem. In such a situation it is impossible to separate electronic and local vibrational motions. This leads to a large increase in the effective strength of the electron–lattice interaction, which is beneficial for pairing.
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Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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Kresin, V. Polaronic Effect and Its Impact on T c for Novel Layered Superconducting Systems. J Supercond Nov Magn 23, 179–182 (2010). https://doi.org/10.1007/s10948-009-0591-5
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DOI: https://doi.org/10.1007/s10948-009-0591-5