تقرير
Experimental confirmation of spin gap in antiferromagnetic alternating spin-3/2 chain substances RCrGeO5 (R = Y or 154Sm) by inelastic neutron scattering experiments
| العنوان: | Experimental confirmation of spin gap in antiferromagnetic alternating spin-3/2 chain substances RCrGeO5 (R = Y or 154Sm) by inelastic neutron scattering experiments |
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| المؤلفون: | Hase, M., Soda, M., Masuda, T., Kawana, D., Yokoo, T., Itoh, S., Matsuo, A., Kindo, K., Kohno, M. |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | A spin-singlet ground state with a spin gap has been discovered in antiferromagnetic spin chain substances when the spin value is 1/2, 1 or 2. To find spin gap (singlet-triplet) excitations in spin-3/2 chain substances, we performed inelastic neutron scattering and magnetization measurements on {\it R}CrGeO$_5$ ({\it R} = Y or Sm) powders. As expected, we observed spin gap excitations and the dispersion relation of the lowest magnetic excitations. We proved that the spin system of Cr$^{3+}$ was an antiferromagnetic alternating spin-3/2 chain. Comment: submiited to Phys. Rev. B on Feb. 28, 2014 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.90.024416 |
| URL الوصول: | http://arxiv.org/abs/1404.6297 |
| رقم الأكسشن: | edsarx.1404.6297 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.90.024416 |
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