THE CURRENT-VOLTAGE CHARACTERISTICS OF SINGLE-CRYSTAL WHISKERS OF 2-2-1-2 BISCCO

被引：7

作者：

KING, PJ ^{[1
]}

KIRK, A ^{[1
]}

LATYSHEV, Y ^{[1
]}

NIKITINA, AM ^{[1
]}

GORLOVA, IG ^{[1
]}

ZYBTSEV, SG ^{[1
]}

ANTOKHINA, VU ^{[1
]}

LEES, JS ^{[1
]}

MING, Z ^{[1
]}

ROYS, WB ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI, INST RADIOENGN & ELECTR, MOSCOW 103907, RUSSIA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 215卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90365-W

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The current-voltage characteristics of a single-crystal whisker of the 2:2:1:2 phase of bismuth strontium calcium copper oxide have been measured over a wide range of temperatures and magnetic fields. In low magnetic fields there are indications of a phase transition. In higher magnetic fields the current-voltage characteristics obey powerful scaling relationships. In large fields and low currents we find that the dissipation has a number of the characteristics of the thermally activated flux creep (TAFC) model of Kim and Anderson, in particular the temperature and magnetic field dependences of the barrier height obey the typical behaviour for that class of model. However, the flux-bundle parameters must be taken as temperature dependent. At high fields and high currents the observed behaviour differs very significantly from the TAFC prediction.

引用

页码：67 / 76

页数：10

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