تقرير
Magnetic polarization of the americium $J = 0$ ground state in AmFe$_{2}$
| العنوان: | Magnetic polarization of the americium $J = 0$ ground state in AmFe$_{2}$ |
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| المؤلفون: | Magnani, N., Caciuffo, R., Wilhelm, F., Colineau, E., Eloirdi, R., Griveau, J. -C., Rusz, J., Oppeneer, P. M., Rogalev, A., Lander, G. H. |
| المصدر: | PRL 114, 097203 (2015) |
| سنة النشر: | 2015 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Trivalent americium has a non-magnetic ($J$ = 0) ground state arising from the cancelation of the orbital and spin moments. However, magnetism can be induced by a large molecular field if Am$^{3+}$ is embedded in a ferromagnetic matrix. Using the technique of x-ray magnetic circular dichroism, we show that this is the case in AmFe$_2$. Since $\langle J_z \rangle$ = 0, the spin component is exactly twice as large as the orbital one, the total Am moment is opposite to that of Fe, and the magnetic dipole operator $\langle T_{z} \rangle$ can be determined directly; we discuss the progression of the latter across the actinide series. Comment: 6 pages, 5 figures to be published in Physical Review Letters (2015) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.114.097203 |
| URL الوصول: | http://arxiv.org/abs/1502.05604 |
| رقم الأكسشن: | edsarx.1502.05604 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.114.097203 |
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