A new aspect of superconductivity observed (Bi, Pb)2(Sr, La)2CuO6+δ single crystals

被引：10
|
作者：
Arao, Y.
Tange, M.
Ikeda, H.
Koyano, T.
Yoshizaki, R. [1 ]
机构：
[1] Univ Tsukuba, Res Facil Ctr Sci & Technol, Cryogen Div, Tsukuba, Ibaraki 3058577, Japan
[2] Univ Tsukuba, Fac Frontier Sci, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2006年 / 445卷
关键词：
bi-2201; 40 K superconductivity; 80 K superconductivity; anisotropy;
D O I：
10.1016/j.physc.2006.04.033
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Physical properties of superconductivity were studied with changing the doping level for the co-substitution of Ph for Bi and La for Sr in Bi-2201 phase. Zero-resistance T-c of 43 K was obtained for as-grown crystals, and the anisotropy parameter gamma was obtained from the resistivity ratio rho(c)/rho(ab). The second-peak effect was observed in the temperature range of 20-30 K. In addition to the 40 K-class superconductivity, a new superconductivity with the onset temperature of about 75 K was observed in magnetic measurement. Irreversible behavior of the superconductivity was obtained in the magnetic field applied perpendicular to the sample surface. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：440 / 442
页数：3
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