تقرير
Static magnetic order of Sr$_{4}$A$_{2}$O$_{6}$Fe$_{2}$As$_{2}$ (A = Sc and V) revealed by local probes
| العنوان: | Static magnetic order of Sr$_{4}$A$_{2}$O$_{6}$Fe$_{2}$As$_{2}$ (A = Sc and V) revealed by local probes |
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| المؤلفون: | Munevar, J., Sanchez, D. R., Alzamora, M., Baggio-Saitovitch, E., Carlo, J. P., Goko, T., Aczel, A. A., Williams, T. J., Luke, G. M., Wen, Hai-Hu, Zhu, Xiyu, Han, Fei, Uemura, Y. J. |
| سنة النشر: | 2010 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Static magnetic order of quasi two-dimensional FeAs compounds Sr4A2O6-xFe2As2, with A = Sc and V, has been detected by 57Fe Moessbauer and muon spin relaxation ({\mu}SR) spectroscopies. The non-superconducting stoichiometric (x = 0) A = Sc system exhibits a static internal/hyperfine magnetic field both at the 57Fe and {\mu}+ sites, indicating antiferromagnetic order of Fe moments below TN = 35 K with ~ 0.1 Bohr magneton per Fe at T = 2 K. The superconducting and oxygen deficient (x = 0.4) A = V system exhibits a static internal field only at the {\mu}+ site below TN ~ 40 K, indicating static magnetic order of V moments co-existing with superconductivity without freezing of Fe moments. These results suggest that the 42622 FeAs systems belong to the same paradigm with the 1111 and 122 FeAs systems with respect to magnetic behavior of Fe moments. Comment: 4 pages 4 figures: for information, contact tomo@lorentz.phys.columbia.edu |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.84.024527 |
| URL الوصول: | http://arxiv.org/abs/1011.1894 |
| رقم الأكسشن: | edsarx.1011.1894 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.84.024527 |
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