X-RAY PHOTOELECTRON-SPECTRA OF LA2CUO4 DOPED WITH STRONTIUM AND SCANDIUM

被引：0

作者：

DOBROTVORSKAYA, MV ^{[1
]}

OBOLENSKII, MA ^{[1
]}

POLTORATSKII, YB ^{[1
]}

SOBOLEV, VL ^{[1
]}

机构：

[1] AM GORKII STATE UNIV,KHARKOV,UKRAINE,USSR

来源：

FIZIKA NIZKIKH TEMPERATUR | 1990年 / 16卷 / 11期

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中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Variations in the structure of the X-ray photoelectron spectra from the surface of the La2CuO4 samples have been studied at their doping with strontium and scandium, mechanical purification, heating in vacuum as well as ion and X-ray irradiation. Identification of the spectra structure of the frame shells of the compositional elements has been carried out. It has been shown that the presence of copper in the mixed valence state is necessary for the high-T(c) superconductivity in the studied compounds, with this the ration of contributions from Cu+ and Cu2+ states to the electron structure of the compounds should be strictly determined.

引用

页码：1387 / 1394

页数：8

共 50 条

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[2] Resonant x-ray emission spectra of CuO and La2CuO4
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[3] Temperature and x-ray illumination effects in oxygen doped La2CuO4
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[4] X-RAY PHOTOELECTRON-SPECTRA OF SCANDIUM, TITANIUM, VANADIUM AND CHROMIUM MONONITRIDES
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[9] CHARGE TRANSFER SATELLITES IN X-RAY PHOTOELECTRON SPECTRA OF La2CuO4.
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[10] X-RAY PHOTOELECTRON-SPECTRA OF MGH2
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