DISSIPATION IN THE MIXED STATE OF CONVENTIONAL AND HIGH-TEMPERATURE SUPERCONDUCTORS

被引：50

作者：

IYE, Y ^{[1
]}

WATANABE, A ^{[1
]}

NAKAMURA, S ^{[1
]}

TAMEGAI, T ^{[1
]}

TERASHIMA, T ^{[1
]}

YAMAMOTO, K ^{[1
]}

BANDO, Y ^{[1
]}

机构：

[1] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN

来源：

PHYSICA C | 1990年 / 167卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90342-C

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A comparative study of the dissipation process in the mixed state of conventional and high temperature superconductors is carried out using thin film samples of YBa2Cu3O7-y, Bi2Sr2CaCu2O8+y and amorphous MoGe alloy. Amorphous MoGe sho ws a nearly ideal flux flow behavior, in which the difference in the resistivity between H⊥J and H{norm of matrix}J amounts to many orders of magnitude, as expected from the Lorentz force effect. Dissipation in Bi2Sr2CaCu2O8+y is very anomalous in that it is completely independent of the macroscopic Lorentz force. The behavior of YBa2Cu3O7-y is intermediate, i.e. a Lorentz-force-effect component, which obeys a sin2 ω dependence, coexists with the angular-independent dissipation. The origin of the anomalous angular-independent dissipation in the high temperature superconductors is discussed in the light of flux dynamics in highly anisotropic layered superconductors. © 1990.

引用

页码：278 / 286

页数：9

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