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Orbital order and partial electronic delocalization in a triangular magnetic metal Ag2MnO2

Ji, S., Kan, E.J., Whangbo, M.-H., Kim, J.-H., Qiu, Y., Matsuda, M., Yoshida, H., Hiroi, Z., Green, M.A., Ziman, T., and others. (2010) Orbital order and partial electronic delocalization in a triangular magnetic metal Ag2MnO2. Physical Review B - Condensed Matter and Materials Physics, 81 (9). p. 94421. ISSN 1098-0121. (doi:10.1103/PhysRevB.81.094421) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1103/PhysRevB.81.094421

Abstract

Magnetic and electrical properties of Ag2MnO2 were examined by elastic and inelastic neutron-scattering measurements and by density-functional calculations. The spins of the triangular antiferromagnet metal Ag2MnO2 are found to freeze into a gapless short-range collinear state below 50 K because of a ferro-orbital ordering and spin-orbit coupling of the high-spin Mn3+ ions. The decrease in the spin-spin correlation lengths of Ag2 MnO2 in the order, ξb â?« ξa â?« ξc, is explained by the spin-exchange interactions calculated for the ferro-orbital ordered state. The electronic states around the Fermi level have significant contributions from the spin-polarized Mn3d and O2p states, which makes electron-electron scattering dominate over electron-phonon scattering at low temperatures leading to the Ï?â?? T2 behavior below 50 K. © 2010 The American Physical Society.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.81.094421
Additional information: Unmapped bibliographic data: C7 - 094421 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Phys. Rev. B Condens. Matter Mater. Phys. [Field not mapped to EPrints] AD - Department of Physics, University of Virginia, Charlottesville, VA 22904-4714, United States [Field not mapped to EPrints] AD - Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, United States [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States [Field not mapped to EPrints] AD - Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan [Field not mapped to EPrints] AD - Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan [Field not mapped to EPrints] AD - Institut Laue Langevin, Boite Postale 156, F-38042 Grenoble Cedex 9, France [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 15 Oct 2015 11:21 UTC
Last Modified: 29 May 2019 16:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51002 (The current URI for this page, for reference purposes)
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