View : 4 Download: 0

Impurity model for mixed-valent Mn3+/Mn4+ ions

Title
Impurity model for mixed-valent Mn3+/Mn4+ ions
Authors
Schlottmann P.Lee K.-J.-B.
Ewha Authors
이공주복
SCOPUS Author ID
이공주복scopus
Issue Date
1997
Journal Title
Physical Review B - Condensed Matter and Materials Physics
ISSN
0163-1829JCR Link
Citation
vol. 56, no. 21, pp. 13999 - 14005
Indexed
SCOPUS scopus
Abstract
Intermediate valent tri- and tetravalent manganese ions play an important role in LaMnO3-based systems. We consider a Mn impurity with five orbitals in cubic symmetry which hybridize with conduction electrons. The exchange interaction in the d shell maximizes the impurity spin. We study the valence of the Mn impurity as a function of the splitting of the eg to t2g orbitals in zero magnetic field and for the totally spin-polarized state. The lifting of the degeneracy of the eg levels due to a small quadrupolar field, related to the Mn-O bond length or a Jahn-Teller effect, is also investigated. Possible implications on the magnetoresistance are discussed.
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE