Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines cond-mat
Date Lundi 2 Mai 2011
Heure 10:30
Institut IMPMC
Salle 4ème étage, Tour 23-24, Salle 10, Université P. et M. Curie, 4, Place Jussieu
Nom de l'orateur Terasaki
Prenom de l'orateur Ichiro
Addresse email de l'orateur
Institution de l'orateur Department of Physics, Nagoya University , Nagoya, Japan
Titre Spin-state-related transport in cobalt oxides
Résumé As is well known, a trivalent cobalt ion Co^{3+} can take three spin states, so-called the low-, intermediate-, and high-spin states. The spin states undergo a transition or crossover in some cobalt oxides, which simultaneously change their transport properties as well as the magnetic properties. In this talk, I will show how the spin state modifies the resistivity and thermopower in doped La(Co,Rh)O_3 and Sr_3YCo_4O_10.5. Part of my talk is published as listed below, and some new unpublished results will also be discussed. References : Terasaki et al., Materials 3 (2010) 786-799 Nakao et al., J. Phys. Soc. Jpn. 80 (2011) 023711
Numéro de preprint arXiv
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