Remanence effects in the electrical resistivity of spin glasses - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue EPL - Europhysics Letters Année : 2011

Remanence effects in the electrical resistivity of spin glasses

Résumé

We have measured the low temperature electrical resistivity of Ag : Mn mesoscopic spin glasses prepared by ion implantation with a concentration of 700 ppm. As expected, we observe a clear maximum in the resistivity (T ) at a temperature in good agreement with theoretical predictions. Moreover, we observe remanence effects at very weak magnetic fields for the resistivity below the freezing temperature Tsg: upon Field Cooling (fc), we observe clear deviations of (T ) as compared with the Zero Field Cooling (zfc); such deviations appear even for very small magnetic fields, typically in the Gauss range. This onset of remanence for very weak magnetic fields is reminiscent of the typical signature on magnetic susceptibility measurements of the spin glass transition for this generic glassy system.
Fichier principal
Vignette du fichier
Fil_Fc_Zfc_BE.pdf (452.19 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00537114 , version 1 (17-11-2010)

Identifiants

Citer

Thibaut Capron, A. Perrat-Mabilon, C. Peaucelle, Tristan Meunier, David Carpentier, et al.. Remanence effects in the electrical resistivity of spin glasses. EPL - Europhysics Letters, 2011, 93 (2), pp.27001. ⟨10.1209/0295-5075/93/27001⟩. ⟨hal-00537114⟩
219 Consultations
223 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More