التفاصيل البيبلوغرافية
| العنوان: |
Terahertz spin currents and inverse spin Hall effect in thin-film heterostructures containing complex magnetic compounds |
| المؤلفون: |
Seifert, T., Martens, U., Günther, S., Schoen, M. A. W., Radu, F., Chen, X. Z., Lucas, I., Ramos, R., Aguirre, M. H., Algarabel, P. A., Anadón, A., Körner, H., Walowski, J., Back, C., Ibarra, M. R., Morellón, L., Saitoh, E., Wolf, M., Song, C., Uchida, K., Münzenberg, M., Radu, I., Kampfrath, T. |
| المصدر: |
SPIN, Volume 07, Issue 03, September 2017 |
| سنة النشر: |
2017 |
| المجموعة: |
Condensed Matter |
| مصطلحات موضوعية: |
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: |
Terahertz emission spectroscopy of ultrathin multilayers of magnetic and heavy metals has recently attracted much interest. This method not only provides fundamental insights into photoinduced spin transport and spin-orbit interaction at highest frequencies but has also paved the way to applications such as efficient and ultrabroadband emitters of terahertz electromagnetic radiation. So far, predominantly standard ferromagnetic materials have been exploited. Here, by introducing a suitable figure of merit, we systematically compare the strength of terahertz emission from X/Pt bilayers with X being a complex ferro-, ferri- and antiferromagnetic metal, that is, dysprosium cobalt (DyCo$_5$), gadolinium iron (Gd$_{24}$Fe$_{76}$), Magnetite (Fe$_3$O$_4$) and iron rhodium (FeRh). We find that the performance in terms of spin-current generation not only depends on the spin polarization of the magnet's conduction electrons but also on the specific interface conditions, thereby suggesting terahertz emission spectroscopy to be a highly surface-sensitive technique. In general, our results are relevant for all applications that rely on the optical generation of ultrafast spin currents in spintronic metallic multilayers. |
| نوع الوثيقة: |
Working Paper |
| DOI: |
10.1142/S2010324717400100 |
| URL الوصول: |
http://arxiv.org/abs/1705.11069 |
| رقم الانضمام: |
edsarx.1705.11069 |
| قاعدة البيانات: |
arXiv |