A new phase in the vortex solid region in Bi2Sr2CaCu2O8

被引：2

作者：

Uehara, M ^{[1
]}

Nimori, S ^{[1
]}

Mochiku, T ^{[1
]}

Numazawa, T ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷

关键词：

vortex state; relaxation time; phase transition;

D O I：

10.1016/S0921-4534(02)02477-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The time decay of the zero field cooled diamagnetic magnetization of Bi2Sr2CaCu2O8 single crystals can be explained in terms of a characteristic relaxation time tau(0) and a mean activation energy E which is proportional to the reciprocal magnetic field. We find that tau(0) becomes extremely long to be around 10 s at low temperatures below 14 K. This low temperature phase in the vortex solid region is also directly confirmed by the ac susceptibility measurements in the ultra low frequency range. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：699 / 700

页数：2

共 4 条

[1] GROWTH AND PROPERTIES OF BI2SR2(CA,Y)CU2O8+DELTA SINGLE-CRYSTALS [J].

MOCHIKU, T ;

KADOWAKI, K .

PHYSICA C, 1994, 235 :523-524

[2] FIELD AND TEMPERATURE-DEPENDENCE OF THE MEAN PENETRATION RATE OF FLUXONS IN THE MIXED STATE OF HIGH-TC SUPERCONDUCTORS [J].

UEHARA, M ;

BARBARA, B .

JOURNAL DE PHYSIQUE I, 1993, 3 (03) :863-870

[3] Decay of metastable states of high Tc and conventional "low Tc" superconductors [J].

Uehara, M. ;

Numazawa, T. ;

Hirano, T. ;

Barbara, B. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1994, 235-40 :2905-2906

[4]

UEHARA M, IN PRESS

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