Absence of weak electron localization in ferromagnetic cobalt wires

被引：11

作者：

Brands, M ^{[1
]}

Carl, A ^{[1
]}

Dumpich, G ^{[1
]}

机构：

[1] Univ Duisburg Essen, Inst Phys, D-47048 Duisburg, Germany

来源：

EUROPHYSICS LETTERS | 2004年 / 68卷 / 02期

关键词：

D O I：

10.1209/epl/i2004-10191-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the low-temperature resistance behavior and the magnetoresistance of single-domain cobalt wires of 400 mum length, 2 mum width and thicknesses between 5 nm and 32 nm. A logarithmic resistance increase is observed for temperatures T<15 K which is consistently explained as originating from enhanced electron-electron interactions (EEI) in two dimensions rather than from weak electron localization (WEL). The results are confirmed for both platinum-capped and un-capped cobalt wires of various thicknesses. Our experimental results are compared with recent theoretical predictions for 2-dimensional ferromagnetic systems.

引用

页码：268 / 274

页数：7

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