X-RAY PHOTOELECTRON-SPECTROSCOPY STUDY OF HGBA2CUO4+DELTA

被引：23

作者：

KIM, HD

OH, SJ

YANG, IS

HUR, NH

机构：

[1] SEOUL NATL UNIV,DEPT PHYS,SEOUL 151742,SOUTH KOREA

[2] EWHA WOMANS UNIV,DEPT PHYS,SEOUL 120750,SOUTH KOREA

[3] KOREA RES INST STAND & SCI,TAEJON 305606,SOUTH KOREA

来源：

PHYSICA C | 1995年 / 253卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(95)00528-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

X-ray photoelectron spectroscopy was used to investigate the oxidation states of Hg and Cu ions in the HgBa2CuO4+delta compound. In contrast to the previous report on the scraped samples [C.S. Gopinath and S. Subramanian, Physica C 232 (1994) 222], our spectra from the fresh surfaces of fractured samples do not show the unusual 3 + oxidation state of Hg ions, while the satellite structure of the Cu 2p(3/2), core-level spectrum which indicates the 2 + oxidation state of Cu ions is observed. These results confirm that, in the HgBa2CuO4+delta compound, the Hg atom does not act as an electron reservoir, and that the Cu-O layers are hole-doped due to the extra oxygens in the Hg-O-delta planes.

引用

页码：351 / 356

页数：6

共 23 条

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