Cu NQR study on the "wipeout" phenomenon in YBa2Cu3Oy

被引：8
|
作者：
Kobayashi, Y
Miyashita, T
Ambai, M
Fukamachi, T
Sato, M
机构：
[1] Nagoya Univ, Div Mat Sci, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[2] JST, Japan Sci & Technol Corp, CREST, Yokohama, Kanagawa, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2001年 / 70卷 / 04期
关键词：
NQR; YBa2Cu3Oy; stripe; wipeout;
D O I：
10.1143/JPSJ.70.1133
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have investigated if the wipeout phenomenon observed for the NQR signal of La(2-x)Sr(x)CuOr in the region x similar to 1/8 at low temperatures, can also be observed in YBa2Cu3Oy system, and found no evidence in the 60 K plateau and higher carrier concentration regions of y. Only in the region of y < 6.5, where at least part of hole carriers is localized, the reduction of Cu NQR spectra at low temperatures has been found. The inhomogeneous distribution of these localized carriers seems to cause the wipeout phenomenon. The wipeout phenomenon observed for YBa2(Cu0.98Zn0.02)(3)O-y in the wide region of y can also be understood by the same mechanism.
引用
收藏
页码：1133 / 1136
页数：4
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