Vortex dynamics in Bi2+xSr2-(x+y)LayCuO6+δ and Bi2Sr2CaCu2Oy irradiated with heavy-ions:: correlation between the Bose-glass behavior and the coupling of pancake vortices

被引：0
|
作者：
Kuroda, N [1 ]
Ishikawa, N
Okayasu, S
Iwase, A
Ikeda, H
Yoshizaki, R
Kambara, T
机构：
[1] Japan Atom Energy Res Inst, Tokai, Ibaraki 3191195, Japan
[2] Univ Tsukuba, Cryogen Ctr, Tsukuba, Ibaraki 3050000, Japan
[3] Inst Phys & Chem Res, Atom Phys Lab, Wako, Saitama 3510198, Japan
[4] Japan Sci & Technol Corp, Kawaguchi, Saitama 3320000, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1998年 / 146卷 / 1-4期
关键词：
AC susceptibility; loss peak; Bose-glass; coupling of pancake vortices; Bi-2201 single crystal; Bi-2212 single crystal;
D O I：
10.1016/S0168-583X(98)00456-X
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Vortex dynamics is investigated in Bi2+xSr2-(x+y)LayCuO6+delta (Bi-2201) and Bi2Sr2CaCu2Oy (Bi-2212) irradiated with 3.5 GeV Xe-136(31+) ions through the relation between the frequency and the loss peak temperature in ac susceptibility in order to seek the Bose-glass transition. The Bose-glass behavior is observed at fields below about half of matching filed, B-Phi/2 in irradiated Bi-2212, On the contrary to irradiated Bi-2212, the Bose-glass behavior is not observed in irradiated Bi-2201. This is due to the extremely weak coupling of pancake vortices along the c axis in Bi-2201 in spite of the presence of columnar defects. The pancake vortices in Bi-2201 irradiated with heavy-ions are almost decoupled, resulting in the occurrence of thermally activated flux flow or creep. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
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页码：572 / 576
页数：5
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