ARPES Study of Localized Charge Carriers in Y0.9Ca0.1Ba2Cu3O6.8 High-Temperature Superconductor

被引：0
作者：
Svetlana G. Titova
Alexey S. Shkvarin
Alexey V. Lukoyanov
Stepan V. Pryanichnikov
Ratibor G. Chumakov
Alexander M. Lebedev
Ludmila P. Kozeeva
Margarita Yu. Kameneva
Vladimir E. Fedorov
机构：
[1] Institute of Metallurgy of Ural Branch of Russian Academy of Sciences,
[2] M.N.Mikheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences,undefined
[3] National Research Center ″Kurchatov Institute″,undefined
[4] Nikolaev Institute of Inorganic Chemistry of Siberian Branch of Russian Academy of Sciences,undefined
来源：
Journal of Superconductivity and Novel Magnetism | 2023年 / 36卷
关键词：
ARPES; High-temperature superconductucting cuprates; Electronic structure; Crystal structure; Localization of charge carriers;
D O I：
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中图分类号：
学科分类号：
摘要：
The connection between the peak of density of electronic states at ~ 0.4 eV below the Fermi level and the localization of charge carriers at compression of the height of CuO5 pyramids has been found by a comparison of experimental angle-resolved photoemission spectra data for Y0.9Ca0.1Ba2Cu3O6.8 single crystal and calculations of the electronic structure in a framework of the density functional theory. Both experiment and calculation are performed using 34.6 and 90.2 eV photon energy. The excitation energy does not have any noticeable influence on the peak of density of electronic states. Crystal structure distortions on the crystal surface result in observation of localized electronic states below the temperature of superconducting transition.
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页码：1093 / 1096
页数：3
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