Direct dynamic imaging of non-adiabatic spin torque effects

Nature Communications

Volumn 3, Issue , 2012, Pages

  Pollard, S D ^a,b   Huang, L ^a,b   Buchanan, K S ^c   Arena, D A ^a   Zhu, Y ^a,b  

^a BROOKHAVEN NATIONAL LABORATORY   (United States)

^b STONY BROOK UNIVERSITY   (United States)

^c Veterinary Dentistry and Oral Surgery   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ADIABATICITY; ARTICLE; DYNAMICS; GIGAHERTZ IMAGING; IMAGING AND DISPLAY; LORENTZ MICROSCOPY; MAGNETIC FIELD; MICROSCOPY; NON ADIABATIC SPIN TRANSFER TORQUE; NUCLEAR MAGNETIC RESONANCE; SIMULATION; TORQUE; VORTEX MOTION;

EID: 84866090412     PISSN: None     EISSN: 20411723     Source Type: Journal    
DOI: 10.1038/ncomms2025     Document Type: Article

References (28)

1. Ralph, D.&Stiles, M. Spin transfer torques. J. Magn. Magn. Mater. 320, 1190-1216 (2008).
2. Beach, G. S. D., Tsoi, M.&Erskine, J. L. Current-induced domain wall motion. J. Magn. Magn. Mater. 320, 1272-1281 (2008).
3. Burrowes, C. et al. Non-adiabatic spin-torques in narrow magnetic domain walls. Nat. Phys. 6, 17-21 (2009).
4. Eltschka, M. et al. Nonadiabatic spin torque investigated using thermally activated magnetic domain wall dynamics. Phys. Rev. Lett. 105, 056601 (2010).
5. Thomas, L. et al. Oscillatory dependence of current-driven magnetic domain wall motion on current pulse length. Nature 443, 197-200 (2006). (Pubitemid 44387605)
6. Heyne, L. et al. Direct determination of large spin-torque nonadiabaticity in vortex core dynamics. Phys. Rev. Lett. 105, 187203 (2010).
7. Lewis, E. et al. Fast domain wall motion in magnetic comb structures. Nat. Mater. 9, 980-983 (2010).
8. Miron, I. M. et al. Fast current-induced domain-wall motion controlled by the Rashba effect. Nat. Mater. 10, 419-423 (2011).
9. Tserkovnyak, Y., Brataas, A.&Bauer, G. E. W. Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets. J. Magn. Magn. Mater. 320, 1282-1292 (2008).
10. Meier, G. et al. Direct imaging of stochastic domain-wall motion driven by nanosecond current pulses. Phys. Rev. Lett. 98, 187202 (2007).
11. Martinez, E., Lopez-Diaz, L., Alejos, O.&Torres, L. Resonant domain wall depinning induced by oscillating spin-polarized currents in thin ferromagnetic strips. Phys. Rev. B 77, 144417 (2008).
12. Shinjo, T., Okuno, T.&Hassdorf, R. Magnetic vortex core observation in circular dots of permalloy. Science 289, 930-932 (2000). (Pubitemid 30659941)
13. Wachowiak, A. et al. Direct observation of internal spin structure of magnetic vortex cores. Science 298, 577-580 (2002). (Pubitemid 35215307)
14. Vansteenkiste, A. et al. X-ray imaging of the dynamic magnetic vortex core deformation. Nat. Phys. 5, 332-334 (2009).
15. Kruger, B. et al. Proposal of a robust measurement scheme for the nonadiabatic spin torque using the displacement of magnetic vortices. Phys. Rev. Lett. 104, 077201 (2010).
16. Bolte, M. et al. Time-resolved X-ray microscopy of spin-torque-induced magnetic vortex gyration. Phys. Rev. Lett. 100, 176601 (2008).
17. Kruger, B. et al. Harmonic oscillator model for current-and field-driven magnetic vortices. Phys. Rev. B 76, 224426 (2007).
18. Compton, R. L.&Crowell, P. A. Dynamics of a pinned magnetic vortex. Phys. Rev. Lett. 97, 137202 (2006).
19. Schofield, M. A., Beleggia, M., Zhu, Y.&Pozzi, G. Characterization of JEOL 2100F Lorentz-TEM for low-magnification electron holography and magnetic imaging. Ultramicroscopy 108, 625-634 (2008).
20. Thiele, A. A. Steady-state motion of magnetic domains. Phys. Rev. Lett. 30, 230-233 (1973).
21. Compton, R. L., Chen, T. Y.&Crowell, P. A. Magnetic vortex dynamics in the presence of pinning. Phys. Rev. B 81, 144412 (2010).
22. Zhu, M., Dennis, C. L.&McMichael, R. D. Temperature dependence of magnetization drift velocity and current polarization in Ni80Fe20 by spin-wave Doppler measurements. Phys. Rev. B 81, 140407 (2010).
23. Manchon, A., Kim, W.- S.&Lee, K.- J. Role of spin diffusion in current-induced domain wall motion. Preprint at arXiv:1110.3487v1 (2011).
24. Yu, X. et al. Images of a spin-torque-driven magnetic nano-oscillator. Phys. Rev. Lett. 106, 167202 (2011).
25. Neusser, S.&Grundler, D. Magnonics: spin waves on the nanoscale. Adv. Mater. 21, 2927-2932 (2009).
26. Ferran, M. et al. Spin-wave interference patterns created by spin-torque nano-oscillators for memory and computation. Nanotechnology 22, 095301 (2011).
27. Donahue, M. J.&Porter, D. G. OOMMF User's Guide. Version 1.0, Vol 6376 (National Institute of Standards and Technology, 1999).
28. Guslienko, K.Yu. Low-frequency vortex dynamic susceptibility and relaxation in mesoscopic ferromagnetic dots. Appl. Phys. Lett. 89, 022510 (2006).