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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