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arXiv · 0801.3779

Bipolaronic proximity and other unconventional effects in cuprate superconductors

A. S. Alexandrov
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Abstract

There is compelling evidence for a strong electron-phonon interaction (EPI) in cuprate superconductors from the isotope effects on the supercarrier mass, high resolution angle resolved photoemission spectroscopies (ARPES), a number of optical and neutron-scattering measurements in accordance with our prediction of high-temperature superconductivity in polaronic liquids. A number of observations point to the possibility that high-Tc cuprate superconductors may not be conventional Bardeen-Cooper-Schrieffer (BCS) superconductors, but rather derive from the Bose-Einstein condensation (BEC) of real-space pairs, which are mobile small bipolarons. Here I review the bipolaron theory of unconventional proximity effects, the symmetry and checkerboard modulations of the order parameter and quantum magneto-oscillations discovered recently in cuprates.

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A. S. Alexandrov. 2008-01-24. Bipolaronic proximity and other unconventional effects in cuprate superconductors. https://doi.org/10.1007/978-1-4020-9146-9_12

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