A many-body theory for a multi-orbital tight-binding model is developed by taking account of local three-body correlations. The theory is applied to the antiferromagnetic NiO. The multiplet structures of hree-particle states are fully taken into account. It is shown that the self-energy correction l
✦ LIBER ✦
Uniform magnetic excitations in NiO nanoparticles
✍ Scribed by C.R.H. Bahl; L. Theil Kuhn; K. Lefmann; P.-A. LindgÅrd; S. Mørup
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 196 KB
- Volume
- 385-386
- Category
- Article
- ISSN
- 0921-4526
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