Magnetization distribution in the layered colossal magnetoresistance manganite La1.2Sr1.8Mn2O7 from polarized neutron diffraction

DOI	Trouver le DOI : https://doi.org/10.1103/PhysRevB.65.214431
Auteur	Rechercher : Argyriou, D. N.; Rechercher : Brown, P. J.; Rechercher : Gardner, J.¹; Rechercher : Heffner, R. H.
Affiliation	Conseil national de recherches Canada. Institut Steacie des sciences moléculaires du CNRC
Format	Texte, Article
Résumé	In the ferromagnetic metallic state of the colossal magnetoresistive (CMR) manganite La1.2Sr1.8Mn2O7, the spin-density distribution is essentially in agreement with the standard picture in which the unpaired electrons occupy the three t2g orbitals dxy, dyz, and dxz. However we find a small spin density (∼4% of the total Mn spin) on the apical O(2) oxygen atom at both 100 and 220 K, and we suggest that this is due to covalency effects. Surprisingly we find no evidence of spin on the other apical oxygen O(1) suggesting that the Mn eg electron distribution along the c axis is highly anisotropic.
Date de publication	2002-06-14
Dans	Physical Review. B, Condensed Matter and Materials Physics 65, nº 21 (14 juin 2002) : 214431–.
Langue	anglais
Numéro NPARC	12328044
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	e4643d9e-cc04-4fb2-90b9-925caf54d23d
Enregistrement créé	2009-09-10
Enregistrement modifié	2020-04-06

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