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Volumn 81, Issue 18, 2010, Pages

Measurement of Gilbert damping parameters in nanoscale CPP-GMR spin valves

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EID: 77955499951     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.184431     Document Type: Article
Times cited : (12)

References (26)
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    • As discussed in, 10.1103/PhysRevB.80.064412, the spin-pumping effect described in Ref. leads to additional contributions to the damping tensor matrix D↔ in Eq. which are anisotropic, angle dependent, and nonlocal between RL and FL. For simplicity, these are here simply lumped into the Gilbert damping parameter α for either RL or FL. In this context, "intrinsic" damping refers approximately to that in the limit Ie →0, but also in the presence of the complete stack structure of the spin-valve device of interest.
    • As discussed in N. Smith, Phys. Rev. B 80, 064412 (2009) 10.1103/PhysRevB.80.064412
    • (2009) Phys. Rev. B , vol.80 , pp. 064412
    • Smith, N.1
  • 8
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    • Currents and torques in metallic magnetic multilayers
    • DOI 10.1016/S0304-8853(02)00291-3, PII S0304885302002913
    • J. C. Slonczewski, J. Magn. Magn. Mater. 247, 324 (2002). 10.1016/S0304-8853(02)00291-3 (Pubitemid 34624087)
    • (2002) Journal of Magnetism and Magnetic Materials , vol.247 , Issue.3 , pp. 324-338
    • Slonczewski, J.C.1
  • 10
    • 33646755603 scopus 로고    scopus 로고
    • 10.1063/1.2177137
    • N. Smith, J. Appl. Phys. 99, 08Q703 (2006). 10.1063/1.2177137
    • (2006) J. Appl. Phys. , vol.99
    • Smith, N.1
  • 20
    • 0000652473 scopus 로고    scopus 로고
    • 10.1103/PhysRevB.60.7395
    • R. Arias and D. L. Mills, Phys. Rev. B 60, 7395 (1999). 10.1103/PhysRevB.60.7395
    • (1999) Phys. Rev. B , vol.60 , pp. 7395
    • Arias, R.1    Mills, D.L.2
  • 21
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    • MINT Center, University of Alabama (Tuscaloosa). These bulk film FMR measurements were made in plane, except for the last entry in Table which was measured in the out-of-plane configuration which should exclude two-magnon contributions (Ref.). The similarity in α values suggests two magnon is unimportant here, which in turn then suggests that RL-FL spin-pumping contributions in the present CPP-GMR nanopillars spin valves [footnote (5)] that would not be present in the RL-only bulk samples are also small. Further comparisons of present measurements with additional bulk film FMR results are expected to be addressed in a future publication.
    • T. Mewes, MINT Center, University of Alabama (Tuscaloosa). These bulk film FMR measurements were made in plane, except for the last entry in Table which was measured in the out-of-plane configuration which should exclude two-magnon contributions (Ref.). The similarity in α values suggests two magnon is unimportant here, which in turn then suggests that RL-FL spin-pumping contributions in the present CPP-GMR nanopillars spin valves [footnote (5)] that would not be present in the RL-only bulk samples are also small. Further comparisons of present measurements with additional bulk film FMR results are expected to be addressed in a future publication.
    • Mewes, T.1
  • 22
    • 77955482105 scopus 로고    scopus 로고
    • A nonzero damping matrix D↔ can technically cause a coupling of nondegenerate eigenmodes if e- m≠n ̇ D↔ ̇ e- n ≠ 0, though this does not change the argument citing this footnote. This small effect can be seen in Fig. as the slight change in the 6 GHz FL FMR peak height and linewidth when αRL is grossly varied from 0.01 to 0.1.
    • A nonzero damping matrix D↔ can technically cause a coupling of nondegenerate eigenmodes if e- m≠n ̇ D↔ ̇ e- n ≠ 0, though this does not change the argument citing this footnote. This small effect can be seen in Fig. as the slight change in the 6 GHz FL FMR peak height and linewidth when αRL is grossly varied from 0.01 to 0.1.
  • 23
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    • (private communication).
    • Thomas Schrefl (private communication).
    • Schrefl, T.1
  • 26
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    • Appendix A of, 10.1016/j.jmmm.2008.05.009
    • Appendix A of N. Smith, J. Magn. Magn. Mater. 321, 531 (2009). 10.1016/j.jmmm.2008.05.009
    • (2009) J. Magn. Magn. Mater. , vol.321 , pp. 531
    • Smith, N.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.