Valence, spin, and orbital state of the Co ions in the one-dimensional Ca3Co2O6: an x-ray absorption and magnetic circular dichroism study
We have investigated the valence, spin, and orbital state of the Co ions in the one-dimensional cobaltate Ca3Co2O6 using x-ray absorption and x-ray magnetic circular dichroism at the Co-L2,3 edges. The Co ions at both the octahedral Co_oct and trigonal Co_trig sites are found to be in a 3+ state. Fr...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) Kapitel/Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
2006
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| In: |
Arxiv
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| Online-Zugang: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/cond-mat/0611545
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| Verfasserangaben: | T. Burnus, Z. Hu, M.W. Haverkort, J.C. Cezar, D. Flahaut, V. Hardy, A. Maignan, N.B. Brookes, A. Tanaka, H.-H. Hsieh, H.-J. Lin, C.-T. Chen, and L.H. Tjeng |
MARC
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| 024 | 7 | |a 10.1103/PhysRevB.74.245111 |2 doi | |
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| 245 | 1 | 0 | |a Valence, spin, and orbital state of the Co ions in the one-dimensional Ca3Co2O6 |b an x-ray absorption and magnetic circular dichroism study |c T. Burnus, Z. Hu, M.W. Haverkort, J.C. Cezar, D. Flahaut, V. Hardy, A. Maignan, N.B. Brookes, A. Tanaka, H.-H. Hsieh, H.-J. Lin, C.-T. Chen, and L.H. Tjeng |
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| 500 | |a Im Titel sind "3", "2" und "6" tiefgestellt | ||
| 500 | |a Gesehen am 28.11.2017 | ||
| 520 | |a We have investigated the valence, spin, and orbital state of the Co ions in the one-dimensional cobaltate Ca3Co2O6 using x-ray absorption and x-ray magnetic circular dichroism at the Co-L2,3 edges. The Co ions at both the octahedral Co_oct and trigonal Co_trig sites are found to be in a 3+ state. From the analysis of the dichroism we established a low-spin state for the Co_oct and a high-spin state with an anomalously large orbital moment of 1.7 muB at the Co3+ trig ions. This large orbital moment along the c-axis chain and the unusually large magnetocrystalline anisotropy can be traced back to the double occupancy of the d2 orbital in trigonal crystal field. | ||
| 650 | 4 | |a Condensed Matter - Strongly Correlated Electrons | |
| 700 | 1 | |a Haverkort, Maurits W. |d 1976- |e VerfasserIn |0 (DE-588)130132047 |0 (DE-627)491717946 |0 (DE-576)257824006 |4 aut | |
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