Magnetic properties of the extended periodic Anderson model
2008 | journal article. A publication with affiliation to the University of Göttingen.
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- Authors
- Koga, Akihisa; Kawakami, Norio; Peters, Robert; Pruschke, Thomas
- Abstract
- We study the magnetic properties of the extended periodic Anderson model, which includes the electron correlations within and between the itinerant and localized bands. By combining dynamical mean-field theory with the numerical renormalization group, we calculate the sublattice magnetization and the staggered susceptibility to determine the phase diagram in the particle-hole symmetric case. We find that two kinds of magnetically ordered states compete with the Kondo insulating state at zero temperature, which induces non-monotonic behavior in the temperature-dependent magnetization. We also clarify that a novel magnetic metallic state is stabilized at half filling by the competition between Hund's coupling and the hybridization.
- Issue Date
- 2008
- Status
- published
- Publisher
- Physical Soc Japan
- Journal
- Journal of the Physical Society of Japan
- ISSN
- 0031-9015