Vortex phase transformations probed by the local ac response of Bi2Sr2CaCu2O8+δ single crystals with various doping

被引：4

作者：

Ando, Y ^{[1
]}

Nakamura, K

机构：

[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan

[2] Tokyo Inst Technol, Dept Energy Sci, Yokohama, Kanagawa 2268502, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.59.R11661

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The linear ac response of the vortex system is measured locally in Bi2Sr2CaCu2O8+delta crystals at various doping, using a miniature two-coil mutual-inductance technique. It was found that a steplike change in the local ac response takes place exactly at the first-order transition (FOT) temperature T-FOT(H) determined by a global de magnetization measurement. The T-FOT(H) line in the H-T phase diagram becomes steeper with increasing doping. In the higher-field region where the FOT is not observed, the local ac response still shows a broadened but distinct feature, which can be interpreted to mark the growth of a short-range order in the vortex system. [S0163-1829(99)50518-3].

引用

页码：R11661 / R11664

页数：4

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