Research PapersNo Access

Resonant excitation of coupled skyrmions by spin-transfer torque

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, P. R. China

Search for more papers by this author

H. Wang

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, P. R. China

Search for more papers by this author

T. Yang

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, P. R. China

Search for more papers by this author

, and

Z. D. Zhang

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, P. R. China

E-mail Address: zdzhang@imr.ac.cn

Corresponding author.

Search for more papers by this author

https://doi.org/10.1142/S0217979215502549Cited by:3 (Source: Crossref)

Abstract

Resonant excitations of coupled skyrmions in Co/Ru/Co nanodisks activated by spin-transfer torque (STT) have been studied by micromagnetic simulations. It is found that STT is an effective method to manipulate skyrmion dynamics. Unlike the dynamics driven by a microwave field, two skyrmions with opposite chiralities move synchronously in the same direction when they are driven by STT, which makes it easier to observe the dynamics of coupled skyrmions in experiments. Resonant excitations of coupled skyrmions can be controlled by changing the frequency or amplitude ratio of a dual-frequency alternating current (AC). In addition, the magnetostatic interaction between the two skyrmions plays an important role in the dynamics of coupled skyrmions.

Keywords:

PACS: 75.50.Ss, 75.70.Kw, 75.78.Cd, 75.78.Fg

You currently do not have access to the full text article.
Recommend the journal to your library today!

References

1. S. Mühlbauer et al., Science 323, 915 (2009). Crossref, Web of Science, ADS, Google Scholar
2. X. Z. Yu et al., Nature 465, 901 (2010). Crossref, Web of Science, ADS, Google Scholar
3. X. Z. Yu, Nat. Mater. 10, 106 (2011). Crossref, Web of Science, ADS, Google Scholar
4. S. Heinze et al., Nat. Phys. 7, 713 (2011). Crossref, Web of Science, Google Scholar
5. S. Seki et al., Science 336, 198 (2012). Crossref, Web of Science, ADS, Google Scholar
6. I. Raičević et al., Phys. Rev. Lett. 106, 227206 (2011). Crossref, Web of Science, ADS, Google Scholar
7. J. Li et al., Nat. Commun. 5, 4704 (2014). Crossref, Web of Science, ADS, Google Scholar
8. M. Mochizuki, Phys. Rev. Lett. 108, 017601 (2012). Crossref, Web of Science, ADS, Google Scholar
9. M. Belesi et al., Phys. Rev. B 85, 224413 (2012). Crossref, Web of Science, ADS, Google Scholar
10. Y. Okamura et al., Nat. Commun. 4, 2391 (2013). Crossref, Web of Science, ADS, Google Scholar
11. N. Nagaosa and Y. Tokura, Nat. Nanotechnol. 8, 899 (2013). Crossref, Web of Science, ADS, Google Scholar
12. A. Neubauer et al., Phys. Rev. Lett. 102, 186602 (2009). Crossref, Web of Science, ADS, Google Scholar
13. Y. Li et al., Phys. Rev. Lett. 110, 117202 (2013). Crossref, Web of Science, ADS, Google Scholar
14. T. Yokouchi et al., Phys. Rev. B 89, 064416 (2014). Crossref, Web of Science, ADS, Google Scholar
15. Y. Dai et al., Sci. Rep. 4, 6153 (2014). Crossref, Web of Science, ADS, Google Scholar
16. H. Wang et al., RSC Adv. 4, 62179 (2014). Crossref, Web of Science, ADS, Google Scholar
17. S. Kasai et al., Phys. Rev. Lett. 97, 107204 (2006). Crossref, Web of Science, ADS, Google Scholar
18. A. Fert, V. Cros and J. Sampaio, Nat. Nanotechnol. 8, 152 (2013). Crossref, Web of Science, ADS, Google Scholar
19. X. Zhang et al., Sci. Rep. 5, 7643 (2015). Crossref, Web of Science, ADS, Google Scholar
20. S.-K. Kim et al., Appl. Phys. Lett. 92, 022509 (2008). Crossref, Web of Science, ADS, Google Scholar
21. D. C. Ralph and M. D. Stiles, J. Magn. Magn. Mater. 320, 1190 (2008). Crossref, Web of Science, ADS, Google Scholar
22. Y. Y. Dai et al., Phys. Rev. B 88, 054403 (2013). Crossref, Web of Science, ADS, Google Scholar
23. M. J. Donahue and D. G. Porter, OOMMF user’s guide, version 1.2a4, (2010), http://math.nist.gov/oommf. Google Scholar
24. S. Zhang and Z. Li, Phys. Rev. Lett. 93, 127204 (2004). Crossref, Web of Science, ADS, Google Scholar
25. P. J. H. Bloemen et al., Phys. Rev. B 50, 13505 (1994). Crossref, Web of Science, ADS, Google Scholar
26. N. Papanicolaou and T. N. Tomaras, Nucl. Phys. B 360, 425 (1991). Crossref, Web of Science, ADS, Google Scholar