| Issue |
Europhys. Lett.
Volume 67, Number 1, July 2004
|
|
|---|---|---|
| Page(s) | 123 - 129 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10042-8 | |
| Published online | 01 June 2004 | |
Chiral susceptibility in canonical spin glass and re-entrant alloys from Hall effect measurements
1
Instituto de Física, Universidade Federal do Rio Grande do Sul Caixa Postal 15051, 91501-970 Porto Alegre, RS, Brazil
2
Laboratoire des Verres, Université Montpellier II 34095 Montpellier, France
Received:
12
March
2004
Accepted:
29
April
2004
The extraordinary Hall effect coefficients 
of the
canonical spin glass alloys 
and
and of an archetype re-entrant system
were measured as functions of
temperature. The data show a critical cusp-like term superimposed
on a smooth background for the spin glasses, and change of sign
with temperature for the re-entrant. The results can be
interpreted consistently by invoking a chiral Hall effect
contribution as proposed by Kawamura.
PACS: 75.50.Lk – Spin glasses and other random magnets / 75.47.-m – Magnetotransport phenomena; materials for magnetotransport / 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.)
© EDP Sciences, 2004
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