| Issue |
Europhys. Lett.
Volume 68, Number 2, October 2004
|
|
|---|---|---|
| Page(s) | 268 - 274 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10191-8 | |
| Published online | 01 October 2004 | |
Absence of weak electron localization in ferromagnetic cobalt wires
Institut für Physik, Experimentalphysik, Universität Duisburg-Essen 47048 Duisburg, Germany
Received:
21
April
2004
Accepted:
19
August
2004
We have investigated the low-temperature resistance behavior and
the magnetoresistance of single-domain cobalt wires of
400
length, 2 width and thicknesses
between 5
and 32. A logarithmic resistance increase
is observed for temperatures 
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.
PACS: 73.61.-r – Electrical properties of specific thin films / 75.60.Ej – Magnetization curves, hysteresis, Barkhausen and related effects / 75.60.Ch – Domain walls and domain structure
© EDP Sciences, 2004
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