NONLINEAR LOGARITHMIC TIME DECAY OF MAGNETIZATION IN A SINGLE-CRYSTAL OF BI2SR2CACU2OX

被引：52

作者：

SHI, DL ^{[1
]}

XU, M ^{[1
]}

机构：

[1] GEORGIA INST TECHNOL,SCH PHYS,ATLANTA,GA 30332

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.44.4548

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nonlinear logarithmic time decay of magnetization has been observed over a long measuring time period (t = 22 h) for a single crystal of Bi2Sr2CaCu2O(x). At relatively low temperatures (T = 12 K) linear ln(t) decay of the magnetization is observed for field (= 1 kG) parallel to the c axis, which can be described well by the Anderson-Kim model. However, at high temperatures (T > 26 K) the magnetization exhibits nonlinear logarithmic time near the irreversibility line. Possible connections between the experimental data and current theories are discussed.

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页码：4548 / 4552

页数：5

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