STUDY OF O 1S XPS BINDING-ENERGY IN YBA2CU3O7-X

被引：9

作者：

SRIVASTAVA, P ^{[1
]}

SEKHAR, BR ^{[1
]}

SAINI, NL ^{[1
]}

SHARMA, SK ^{[1
]}

GARG, KB ^{[1
]}

MERCEY, B ^{[1
]}

LECOEUR, P ^{[1
]}

MURRAY, H ^{[1
]}

机构：

[1] ISMRA UNIV, LAB CRISMAT, CAEN, FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 02期

关键词：

D O I：

10.1016/0038-1098(93)90388-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

X-ray photoemission measurements were performed on YBa2Cu3O7-x thin films in order to understand the origin and nature of various features appearing in O 1s spectra before and after sputtering. The peak appearing at 528.8 eV is totally intrinsic and is assigned to the bulk. Peak appearing at about 531.2 eV which has been a subject of controversy, extrinsic or intrinsic in origin, is shown to entirely originate from the unstable surface layer of YBa2Cu3O7-x which is non-superconducting at room temperature under UHV environment. The peak at 530.4 arises because of the change in the environment of oxygen atoms present in this non-superconducting layer on sputtering.

引用

页码：105 / 110

页数：6

共 30 条

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