EVIDENCE FOR 2-DIMENSIONAL CONDUCTIVITY IN THE NORMAL STATE OF GDBACUO THIN-FILMS

被引：4

作者：

BOBO, JF ^{[1
]}

OUSSET, JC ^{[1
]}

ASKENAZY, S ^{[1
]}

RAKOTO, H ^{[1
]}

BROTO, JM ^{[1
]}

机构：

[1] INST NATL SCI APPL,SERV CHAMPS INTENSES,F-31077 TOULOUSE,FRANCE

来源：

PHYSICA C | 1991年 / 180卷 / 1-4期

关键词：

D O I：

10.1016/0921-4534(91)90658-L

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It is now well known that the physical properties of the high Tc 123 superconducting oxides are strongly anisotropic. We obtained textured films of GdBa2Cu3O7 (with the c-axis normal to the plane) by coevaporation on ZrO2 substrates. By applying a strong magnetic field which orientation varies with respect to the c-axis, we show that the classical magnetoresistance only depends on the normal component of the field. This direct proof that the electronic band has a real 2-D character in these materials. Keeping in mind the similar crystallographic parameters in the 123 superconductors, this property can easily be extended to the whole family.

引用

页码：168 / 171

页数：4

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