Lin, T. and Liu, H. and Poellath, S. and Zhang, Y. and Ji, B. and Lei, N. and Yun, J. J. and Xi, L. and Yang, D. Z. and Xing, T. and Wang, Z. L. and Sun, L. and Wu, Y. Z. and Yin, L. F. and Wang, W. B. and Shen, J. and Zweck, J. and Back, C. H. and Zhang, Y. G. and Zhao, W. S. (2018) Observation of room-temperature magnetic skyrmions in Pt/Co/W structures with a large spin-orbit coupling. PHYSICAL REVIEW B, 98 (17): 174425. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Magnetic skyrmions have significant potential for applications in storage and logic devices, but the ability to control skyrmion motion is key to their success. To realize controlled skyrmion motion, vertical spin current-driven methods employing, e.g., the spin Hall or inverse spin galvanic effect, are efficient; thus, magnetic heterostructures featuring large spin-orbit torques are appealing. In this paper, we report on the observation of room-temperature magnetic skyrmions in Pt/Co/W multilayers. The interfacial Dzyaloshinskii-Moriya interaction was estimated to be 0.19 +/- 0.05 mJ/m(2) based on the asymmetric domain-wall motion occurring upon the application of in-plane magnetic fields. The evolution of the magnetic structures from labyrinth domains to skyrmions with diameters of around 145 nm under magnetic fields was observed by performing Lorentz transmission electron microscopy. The skyrmion nucleation fields could be tuned by varying the repetition number. Large spin Hall angle systems such as Pt/Co/W multilayers are appealing for achieving current-driven skyrmion motion in future racetrack and logic applications.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | REAL-SPACE OBSERVATION; MULTILAYERS; STABILITY; DYNAMICS; REVERSAL; CREATION; MOTION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Oct 2019 06:31 |
| Last Modified: | 09 Oct 2019 06:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/13528 |
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