EVIDENCE AGAINST HOLE FORMATION BY CA IN YBA2CU4O8

被引：23

作者：

KNUPFER, M ^{[1
]}

NUCKER, N ^{[1
]}

ALEXANDER, M ^{[1
]}

ROMBERG, H ^{[1
]}

ADELMANN, P ^{[1
]}

FINK, J ^{[1
]}

KARPINSKI, J ^{[1
]}

KALDIS, E ^{[1
]}

RUSIECKI, S ^{[1
]}

JILEK, E ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL, FESTKORPERPHYS LAB, CH-8093 ZURICH, SWITZERLAND

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1991年 / 182卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90457-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on electron energy-loss studies of Ca-doped YBa2Cu4O8. O 1s and Ca 2p absorption edges indicate that there is almost no change of the hole concentration upon Ca doping and that a major fraction of the Ca enters the Ba site. This suggests that the increase of T(c) upon Ca doping is not caused by a formation of additional holes as expected for the replacement of trivalent Y by divalent Ca.

引用

页码：62 / 66

页数：5

共 42 条

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