| Autor: |
Jena, Sukanta Kumar, Islam, Rajibul, Milińska, Ewelina, Jakubowski, Marcin M., Minikayev, Roman, Lewińska, Sabina, Lynnyk, Artem, Pietruczik, Aleksiej, Aleszkiewicz, Paweł, Autieri, Carmine, Wawro, Andrzej |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Nanoscale, 2021,13, 7685-7693 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1039/D0NR08594D |
| Popis: |
Dzyaloshinskii-Moriya interaction (DMI) manifesting in asymmetric layered ferromagnetic films gives rise to non-colinear spin structures stabilizing magnetization configurations with nontrivial topology. In this work magnetization reversal, domain structure, and strength of DMI are related with the structure of W/Co/Pt multilayers grown by molecular beam epitaxy. Applied growth method enables fabrication of layered systems with higher crystalline quality than commonly applied sputtering techniques. As a result, a high value of D coefficient was determined from the aligned magnetic domain stripe structure, substantially exceeding 2 mJ/m2. The highest value of DMI value D$_{eff}$ = 2.64mj/m2 and strength of surface DMI parameter DS = 1.83pJ/m for N=10 has been observed. Experimental results coincide precisely with those obtained from structure based micromagnetic modelling and density functional theory calculations performed for well-defined layered stacks. This high value of DMI strength originates from dominating contributions of the interfacial atomic Co layers and additive character from both interface types. |
| Databáze: |
arXiv |
| Externí odkaz: |
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