تقرير
Neutron Reflectometry Studies on Magnetic Stripe Domains in Permalloy/Superconductor bilayers
| العنوان: | Neutron Reflectometry Studies on Magnetic Stripe Domains in Permalloy/Superconductor bilayers |
|---|---|
| المؤلفون: | Liu, Yaohua, Iavarone, M., Belkin, A., Karapetrov, G., Novosad, V., Zhernenkov, M., Wang, Q., Fitzsimmons, M. R., Lauter, V., Velthuis, S. G. E. te |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity |
| الوصف: | We explored changes in magnetic domain structures in a magnetic layer due to the onset of the superconductivity of an adjacent superconductive layer using neutron reflectometry. Magnetic domain structures in 1~$\mu$m thick permalloy (Py) films were studied as functions of magnetic field, temperature and under the influence of the onset of superconductivity in a neighboring layer. Bragg peaks in the off-specular scattering were observed at low fields following saturation with an in-plane field, which are attributed to the quasi-parallel magnetic stripes along the field direction. During the magnetization reversal from saturation, the stripe pattern shows increases in the period, the transverse coherence length (\textit{i.e.}, perpendicular to the stripes) and the amplitude of the out-of-plane magnetization component. The coherence length of the magnetic stripes is anisotropic in the remnant state with the longitudinal coherence length (\textit{i.e.}, along the stripes) being larger than the transverse one. The stripe period shows a weak temperature dependence between 300~K and 3~K, but no abrupt change in the period is observed when the temperature crosses the superconducting critical temperature. Comment: 7 pages and 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1410.5520 |
| رقم الأكسشن: | edsarx.1410.5520 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |