تقرير
Engineering Dzyaloshinskii-Moriya interaction in B20 thin film chiral magnets
| العنوان: | Engineering Dzyaloshinskii-Moriya interaction in B20 thin film chiral magnets |
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| المؤلفون: | Turgut, Emrah, Paik, Hanjong, Nguyen, Kayla, Muller, David A., Schlom, Darrell G., Fuchs, Gregory D. |
| المصدر: | Phys. Rev. Materials 2, 074404 (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | Chiral magnetic Mn$_x$Fe$_{1-x}$Ge compounds have an antisymmetric exchange interaction that is tunable with the manganese stoichiometric fraction, $x$. Although millimeter-scale, polycrystalline bulk samples of this family of compounds have been produced, thin-film versions of these materials will be necessary for devices. In this study, we demonstrate the growth of epitaxial Mn$_x$Fe$_{1-x}$Ge thin films on Si (111) substrates with a pure B20 crystal structure in the stoichiometric fraction range x from 0 to 0.81. Following systematic physical and magnetic characterization including microwave absorption spectroscopy, we quantify the antisymmetric exchange interaction and helical period as a function of $x$, which ranges from 200 nm to 8 nm. Our results demonstrate an approach to engineering the size of magnetic skyrmions in epitaxial films that are grown using scalable techniques. Comment: 21 pages including supporting materials, 9 figures total |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevMaterials.2.074404 |
| URL الوصول: | http://arxiv.org/abs/1802.05107 |
| رقم الأكسشن: | edsarx.1802.05107 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevMaterials.2.074404 |
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