| Issue |
Europhys. Lett.
Volume 34, Number 8, June II 1996
|
|
|---|---|---|
| Page(s) | 617 - 622 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00505-4 | |
| Published online | 01 September 2002 | |
Absence of size dependence in the spin-glass resistivity of AuFe wires?
1
Laboratorium voor Vaste-Stoffysika en Magnetisme, Katholieke
Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
2
Department of Physics and Astronomy, Northwestern University, 2145
Sheridan Road, Evanston, Il 60208, USA
Received:
4
January
1996
Accepted:
25
April
1996
We report on the low-temperature resistivity 
of AuFe spin-glass wires with a
thickness around 
and a linewidth varying between 
and
. The observed linewidth dependence of is due to the contribution of
the disorder-enhanced electron-electron interaction, while the spin-glass contribution is
independent of linewidth. However, a quantitative analysis of the data reveals a
substantial suppression of both the amplitude of the spin-glass resistivity and the interaction
strength between magnetic impurities when compared to bulk AuFe alloys. This may indicate the
presence of a size effect resulting from the finite spin-glass thickness.
PACS: 73.50.-h – Electronic transport phenomena in thin films / 75.50.Lk – Spin glasses and other random magnets / 75.30.Hx – Magnetic impurity interactions
© EDP Sciences, 1996
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