Phase transition in vortex-state of untwinned YBa2Cu3O7-δ single crystals at high magnetic fields up to 260 kOe

被引：9

作者：

Naito, T ^{[1
]}

Nishizaki, T ^{[1
]}

Kobayashi, N ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

PHYSICA C | 1997年 / 293卷 / 1-4期

关键词：

D O I：

10.1016/S0921-4534(97)01536-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to study the thermodynamic phase transition in the vortex-state of YBa2Cu3O7-delta, we measured the temperature dependence of the electrical resistivity both of untwinned and twinned single crystals in high magnetic fields H parallel to the c-axis. For untwinned crystals, the resistive jump which results from the first-order vortex lattice melting transition completely disappears and the resistivity shows gradual temperature dependence above certain field H-*. The first-order and the second-order phase transition line is determined up to 260 kOe and the vortex-state is discussed for untwinned and twinned crystals. (C) 1997 Elsevier Science B.V.

引用

页码：186 / 190

页数：5

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