Magnetic skyrmion logic gates: Conversion, duplication and merging of skyrmions

Scientific Reports

Volumn 5, Issue , 2015, Pages

  Zhang, Xichao ^a   Ezawa, Motohiko ^b   Zhou, Yan ^a  

^a UNIVERSITY OF HONG KONG   (Hong Kong)

^b UNIVERSITY OF TOKYO   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84925778086     PISSN: None     EISSN: 20452322     Source Type: Journal    
DOI: 10.1038/srep09400     Document Type: Article

References (44)

1. Brown, G. E. & Rho, M. The Multifaced Skyrmions (World Scientific, Singapore, 2010).
2. Rajaraman, R. Solitons and Instantons, Volume 15: An Introduction to Solitons and Instantons in Quantum Field Theory (North-Holland, North Holland, 1987).
3. Skyrme, T. H. R. A Non-Linear Field Theory. Proc. R. Soc. A 260, 127-138 (1961).
4. Skyrme, T. H. R. A unified field theory of mesons and baryons. Nucl. Phys. 31, 556-569 (1962).
5. Fert, A., Cros, V. &Sampaio, J. Skyrmions on the track. Nat. Nanotech. 8, 152-156 (2013).
6. Nagaosa, N. & Tokura, Y. Topological properties and dynamics of magnetic skyrmions. Nat. Nanotech. 8, 899-911 (2013).
7. Mühlbauer, S. et al. Skyrmion lattice in a chiral magnet. Science 323, 915-919 (2009).
8. Münzer, W. et al. Skyrmion lattice in the doped semiconductor Fe1-xCOxSi. Phys. Rev. B 81, 041203 (2010).
9. Yu, X. Z. et al. Real-space observation of a two-dimensional skyrmion crystal. Nature 465, 901-904 (2010).
10. Peiderer, C. & Rosch, A. Condensed-matter physics single skyrmions spotted. Nature 465, 880-881 (2010).
11. Yu, X. Z. et al. Near room-temperature formation of a skyrmion crystal in thinfilms of the helimagnet FeGe. Nat. Mater. 10, 106-109 (2011).
12. Heinze, S. et al. Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions. Nat. Phys. 7, 713-718 (2011).
13. Yu, X. Z. et al. Biskyrmion states and their current-driven motion in a layered manganite. Nat. Commun. 5, 3198 (2014).
14. Du, H. et al.Highly Stable Skyrmion State in Helimagnetic MnSi Nanowires. Nano Lett. 14, 2026-2032 (2014).
15. Sun, L. et al. Creating an Artificial Two-Dimensional Skyrmion Crystal by Nanopatterning. Phys. Rev. Lett. 110, 167201 (2013).
16. Dai, Y. Y. et al. Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction. Phys. Rev. B 88, 054403 (2013).
17. Tomasello, R. et al. A strategy for the design of skyrmion racetrack memories. Sci. Rep. 4, 6784 (2014).
18. Zhang, X. C. et al. Skyrmion-skyrmion and skyrmion-edge repulsions on the skyrmion-based racetrack memory. Sci. Rep. 5, 7643 (2015).
19. Mochizuki, M. et al. Thermally driven ratchet motion of a skyrmion microcrystal and topological magnon Hall effect. Nat. Mater. 13, 241 (2014).
20. Pereiro, M. et al. Topological excitations in a kagome magnet. Nat. Commun. 5, (2014).
21. Miao, B. F. et al. Experimental realization of two-dimensional artificial skyrmion crystals at room temperature. Phys. Rev. B 90, 174411 (2014).
22. Romming, N. et al.Writing and deleting single magnetic skyrmions. Science 341, 636-639 (2013).
23. Tchoe, Y. & Han, J. H. Skyrmion generation by current. Phys. Rev. B 85, 174416 (2012).
24. Iwasaki, J., Mochizuki, M. & Nagaosa, N. Current-induced skyrmion dynamics in constricted geometries. Nat. Nano. 8, 742-747 (2013).
25. Finazzi, M. et al. Laser-induced magnetic nanostructures with tunable topological properties. Phys. Rev. Lett. 110, 177205 (2013).
26. Ezawa, M. Giant skyrmions stabilized by dipole-dipole interactions in thin ferromagnetic films. Phys. Rev. Lett. 105, 197202 (2010).
27. Zhou, Y. & Ezawa, M. A reversible conversion between a skyrmion and a domainwall pair in junction geometry. Nat. Commun. 5, 4652 (2014).
28. Iwasaki, J., Mochizuki, M. & Nagaosa, N. Universal current-velocity relation of skyrmion motion in chiral magnets. Nat. Commun. 4, 1463 (2013).
29. Sampaio, J., Cros, V., Rohart, S., Thiaville, A. & Fert, A. Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures. Nat. Nano. 8, 839-844 (2013).
30. Boulle, O., Buda-Prejbeanu, L. D., Jué, E., Miron, I. M. & Gaudin, G. Current induced domain wall dynamics in the presence of spin orbit torques. J. Appl. Phys. 115, 17D502 (2014).
31. Donahue, M. J. & Porter, D. G. National Institute of Standards and Technology, Interagency Report NISTIR, 6376 (1999 OOMMF user's guide, version 1.0.).
32. Rohart, S. & Thiaville, A. Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction. Phys. Rev. B 88, 184422 (2013).
33. Beg, M. et al. Finite size effects, stability, hysteretic behaviour, and reversal mechanism of skyrmionic textures in nanostructures. arXiv 1312.7665, http://arxiv.org/abs/1312.7665 (2013). Date of access 01/03/2014.
34. Shibata, K. et al. Towards control of the size and helicity of skyrmions in helimagnetic alloys by spin-orbit coupling. Nat Nano 8, 723 (2013).
35. Vogt, K. et al. Realization of a spin-wave multiplexer. Nat. Commun. 5, 3727 (2014).
36. Derrick, G. H. Comments on nonlinear wave equations as models for elementary particles. J. Math. Phys. 5, 1252 (1964).
37. Hobart, R. H. On the instability of a class of unitary field models. Proc. Phys. Soc. 82, 201 (1963).
38. Bogdanov, A. N. & Yablonskii, D. A. Thermodynamically stable "vortices" in magnetically ordered crystals. Themixed state of magnets. Zh. Eksp. Teor. Fiz. 95, 178-182 (1989).
39. Bocdanov, A. & Hubert, A. The Properties of Isolated Magnetic Vortices. Phys. Status Solidi B 186, 527-543 (1994).
40. JR, Brown, W. F. Micromagnetics (Krieger, New York, 1978).
41. Gilbert, T. L. A Lagrangian formulation of the gyromagnetic equation of the magnetization field. Phys. Rev. 100, 1243 (1955).
42. Landau, L. & Lifshitz, E. On the theory of the dispersion of magnetic permeability in ferromagnetic bodies. Physik. Z. Sowjetunion 8, 153-169 (1935).
43. Thiaville, A., Rohart, S., Jué, É., Cros, V. & Fert, A. Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films. Europhys. Lett. 100, 57002 (2012).
44. Thiaville, A., Nakatani, Y., Miltat, J. &Suzuki, Y. Micromagnetic understanding of current-driven domain wall motion in patterned nanowires. Europhys. Lett. 69, 990 (2005).