Spin- and orbital-moment compensation in the zero-moment ferromagnet Sm0.974Gd0.026Al2
| العنوان: | Spin- and orbital-moment compensation in the zero-moment ferromagnet Sm0.974Gd0.026Al2 |
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| المؤلفون: | Dhesi, S.S., Van Der Laan, G., Bencok, Peter, Brookes, Nick B., Galéra, Rose-Marie, Ohresser, Philippe |
| المساهمون: | DIAMOND Light source, European Synchrotron Radiation Facility (ESRF), Magnétisme et Supraconductivité (MagSup), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2010, 82, pp.180402-1. ⟨10.1103/PhysRevB.82.180402⟩ |
| بيانات النشر: | HAL CCSD, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Condensed Matter::Materials Science, 75.50.Cc,78.70.Dm, [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el] |
| الوصف: | 4 pages; International audience; The balance between the orbital and spin magnetic moments of Sm3+ in the zero-moment ferromagnet Sm0.974Gd0.026Al2 has been studied using x-ray magnetic circular dichroism (XMCD) at the Sm M4,5 edges. The difference in the XMCD multiplet structure below and above the compensation point, Tcomp, demonstrates that the exchange and crystal-field interactions mix the low-lying 7=7/2 excited state into the Sm f5 6H5/2 ground state. Sum-rule analysis of the temperature-dependent XMCD reveals an anomalous change in the Sm3+ orbital to spin magnetic-moment ratio as the net magnetization vanishes at Tcomp. This behavior is ascribed to the role of the conduction electron-spin moment which couples parallel to the Sm spin moment. |
| اللغة: | English |
| تدمد: | 1098-0121 1550-235X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2dd486480ee72886ff11c0668eb48d33 https://hal.archives-ouvertes.fr/hal-00667313 |
| رقم الأكسشن: | edsair.dedup.wf.001..2dd486480ee72886ff11c0668eb48d33 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10980121 1550235X |
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