Оптическая спектроскопия и сверхпроводимость купратов (Обзор)

Resultado de la investigación: Review articlerevisión exhaustiva

Resumen

The optical properties of low-dimensional dielectric cuprates, including parent systems for high-temperature superconductors, such as La_2CuO_4, Sr_2CuO_2Cl_2, and YBa_2Cu_3O_6 are briefly reviewed. The main focus is on the d – d and p – d charge transfer transitions, which determine the fundamental absorption band. The analysis of optical properties shows the instability of parent cuprates against the d – d charge transfer with the formation of metastable electron–hole (EH) dimers of the Cu^1+–Cu^3+-type pairs coupled by the two-particle transfer and characterized by the giant electric polarizability. The formation of a system of stable EH dimers upon nonisovalent substitution determines the unconventional properties of the pseudogap and superconducting phases of doped cuprates.
Título traducido de la contribuciónOptical Spectroscopy and Superconductivity of Cuprates (Review)
Idioma originalRussian
Páginas (desde-hasta)809-816
Número de páginas8
PublicaciónФизика твердого тела
Volumen61
N.º5
DOI
EstadoPublished - 2019

GRNTI

  • 29.00.00 PHYSICS

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