
Параметры ядерного квадрупольного взаимодействия и пространственное распределение электронных дефектов в решетках YBa-=SUB=-2-=/SUB=-Cu-=SUB=-3-=/SUB=-O-=SUB=-7-=/SUB=- и La-=SUB=-2-x-=/SUB=-Sr-=SUB=-x-=/SUB=-CuO-=SUB=-4-=/SUB=-
Author(s) -
Е. И. Теруков,
А. В. Марченко,
П. П. Серегин,
V. S. Kiselev,
К. Б. Шахович
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.10.46510.091
Subject(s) - superconductivity , crystal structure , lattice (music) , cuprate , copper , quadrupole , metal , oxygen , crystallography , planar , materials science , high temperature superconductivity , condensed matter physics , chemistry , physics , atomic physics , metallurgy , computer graphics (images) , organic chemistry , computer science , acoustics
The comparison of calculated and experimental parameters of nuclear quadrupole interaction in the sites of crystal lattice of YBa_2Cu_3O_7 and La_2– x Sr_ x CuO_4 superconducting copper metal oxides has shown that effective charges of all atoms of superconducting ceramic lattices correspond to standard rates of their oxidation, except the atoms of chain and planar oxygen in YBa_2Cu_3O_7 lattice and atoms of planar oxygen in La_2– x Sr_ x CuO_4 lattice, whose decreased charge is interpreted as a result of hole localization in the corresponding sublattices.