Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2006     Display Documents



  history
ID: 273443.0, MPI für Festkörperforschung / FKF Publikationen 2006
Spin-1/2 triangular lattice with orbital degeneracy in a metallic oxide Ag2NiO2
Authors:Yoshida, H.; Muraoka, Y.; Sörgel, T.; Jansen, M.; Hiroi, Z.
Language:English
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Physical Review B
Volume:73
Issue / Number:2
Sequence Number of Article:020408
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:A metallic and magnetic transition metal oxide Ag2NiO2 is studied by
means of resistivity, magnetic susceptibility, specific heat, and x-ray
diffraction. The crystal structure is characterized by an alternating
stacking of a Ni3+O2 layer and a (Ag-2)(+) layer, the former realizing
a spin-1/2 triangular lattice with e(g) orbital degeneracy and the
latter providing itinerant electrons. It is found that the NiO2 layer
exhibits orbital ordering at T-s = 260 K and antiferromagnetic spin
ordering at T-N= 56 K. Moreover, a moderately large mass enhancement is
found for the itinerant electrons, suggesting a significant
contribution from the nearly localized Ni 3d state to the Ag 5s state
that forms a broad band.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Festkörperforschung
External Affiliations:Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan.
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
Identifiers:ISI:000235009300011 [ID No:1]
ISSN:1098-0121 [ID No:2]
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.