Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters
Using a combination of electronic-structure and many-body calculations, we investigate correlations effects in the halfmetallic ferromagnet NiMnSb. A realistic many-body Hamiltonian, containing only Mn-d orbitals shows the importance of non-quasiparticle states just above the Fermi level. Our result...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2008-06-01
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| Series: | Iranian Journal of Physics Research |
| Subjects: | |
| Online Access: | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-275&slc_lang=en&sid=1 |
| _version_ | 1828254820701569024 |
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| author | H. Allmaier L. Chioncel E. Arrigoni M. I. Katsnelson A. I. Lichtenstein |
| author_facet | H. Allmaier L. Chioncel E. Arrigoni M. I. Katsnelson A. I. Lichtenstein |
| author_sort | H. Allmaier |
| collection | DOAJ |
| description | Using a combination of electronic-structure and many-body calculations, we investigate correlations effects in the halfmetallic ferromagnet NiMnSb. A realistic many-body Hamiltonian, containing only Mn-d orbitals shows the importance of non-quasiparticle states just above the Fermi level. Our results suggest that for a better description of low energy states around Fermi level, Ni-d orbitals should be explicitly included. |
| first_indexed | 2024-04-13T02:03:39Z |
| format | Article |
| id | doaj.art-3b4ad3ce1591435fa461ed982e9238d9 |
| institution | Directory Open Access Journal |
| issn | 1682-6957 |
| language | English |
| last_indexed | 2024-04-13T02:03:39Z |
| publishDate | 2008-06-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-3b4ad3ce1591435fa461ed982e9238d92022-12-22T03:07:31ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572008-06-0182112112Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parametersH. AllmaierL. ChioncelE. ArrigoniM. I. KatsnelsonA. I. LichtensteinUsing a combination of electronic-structure and many-body calculations, we investigate correlations effects in the halfmetallic ferromagnet NiMnSb. A realistic many-body Hamiltonian, containing only Mn-d orbitals shows the importance of non-quasiparticle states just above the Fermi level. Our results suggest that for a better description of low energy states around Fermi level, Ni-d orbitals should be explicitly included.http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-275&slc_lang=en&sid=1half metalcluster perturbationelectron correlation |
| spellingShingle | H. Allmaier L. Chioncel E. Arrigoni M. I. Katsnelson A. I. Lichtenstein Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters Iranian Journal of Physics Research half metal cluster perturbation electron correlation |
| title | Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters |
| title_full | Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters |
| title_fullStr | Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters |
| title_full_unstemmed | Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters |
| title_short | Electron correlation effects in the half-metallic NiMnSb within a cluster-perturbation approach with ab-initio parameters |
| title_sort | electron correlation effects in the half metallic nimnsb within a cluster perturbation approach with ab initio parameters |
| topic | half metal cluster perturbation electron correlation |
| url | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-275&slc_lang=en&sid=1 |
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