EFFECTS OF REDOX THERMAL TREATMENTS ON THE TRANSVERSE RESISTANCE PEAK AT THE EDGE OF THE SUPERCONDUCTING TRANSITION IN BI2SR2CACU2O8+X

被引：25

作者：

BALESTRINO, G ^{[1
]}

MILANI, E ^{[1
]}

VARLAMOV, AA ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICA C | 1993年 / 210卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90981-U

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The growth of the transverse resistivity just above the transition in Bi2Sr2CaCu2O8+x (BSCCO 2212) expitaxial films is studied in the framework of the recent fluctuation model proposed by Ioffe, Larkin, Varlamov and Yu Lu. The effects of different redox thermal treatments on the transverse resistive peak is investigated. The fit of the experimental curves with the theory is good and allows one to estimate the values of some physical parameters included in the theory itself (namely the in-plane Fermi velocity v(F), the carrier lifetime tau and the hopping integral w). It is shown that the oxidizing thermal treatment gives rise to a strong decrease in the transverse resistance peak just above T(c). Such effect is ascribed to the increase in v(F) due to the growth of the carrier concentration induced by the oxidizing treatment. Effects on the carrier lifetime and the hopping integral are hindered by the large variation of v(F).

引用

页码：386 / 390

页数：5

共 13 条

[1] COMPOSITIONAL DEPENDENCE OF PROPERTIES OF BI2-YPBYSR3-XCAXCU2O8+Z FILMS GROWN BY LIQUID-PHASE EPITAXY [J].