Polarons and Bipolarons in Advanced Materials
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EPIs have been shown to be relevant in cuprate and other high-temperature superconductors through, e.g., isotope substitution experiments [197–199], high-resolution angle-resolved photoemission (ARPES) [201,382,383], a number of earlier optical [378, 384, 389], neutron scattering  and more recent inelastic scattering , and some other measurements . In colossal magnetoresistance (CMR) manganites, isotope substitutions , X-ray and neutron scattering spectroscopies [379, 380], and a number of other experiments also show a significant effect of EPI on the physical properties (for review, see ). Therefore, it has been suggested that the long-range  and/or the molecular-type (e.g., ) EPIs play significant role in hightemperature superconductors (see [11, 59, 211, 216], and references therein), and in CMR manganites (see [218, 219, 377], and references therein).
KeywordsHubbard Model Colossal Magnetoresistance Polaron Formation Core Spin High Superconducting Critical Temperature
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