Surface electronic structure and magnetic properties of doped manganites

Authors
Calderon, MJ Brey, L Guinea, F
Citation
Mj. Calderon et al., Surface electronic structure and magnetic properties of doped manganites, PHYS REV B, 60(9), 1999, pp. 6698-6704
Citations number
37
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
9
Year of publication
1999
Pages
6698 - 6704
Database
ISI
SICI code
0163-1829(19990901)60:9<6698:SESAMP>2.0.ZU;2-J
Abstract
The electronic structure and magnetic properties of doped manganites surfac es are investigated. It is assumed that, at the outermost layer, the enviro nment of the Mn ions does not have cubic symmetry. The e(g), orbitals are s plit and the double exchange mechanism is weakened. The charge state of the Mn ions is modified, and the magnetic ordering of the spins tends to be an tiferromagnetic. The surface magnetization and the dependence of the transp ort properties through the resulting surface barrier on applied magnetic fi eld and temperature is analyzed. [S0163-1829(99)02430-3].