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Your search keyword '"Katine, J. A."' showing total 26 results
Start Over Author "Katine, J. A." Journal physical review b
26 results on '"Katine, J. A."'

2. Dependence of spin pumping and spin transfer torque upon Ni81Fe19 thickness in Ta/Ag/Ni81Fe19/Ag/Co2MnGe/Ag/Ta spin-valve structures

Author

Durrant, C. J., primary, Shelford, L. R., additional, Valkass, R. A. J., additional, Hicken, R. J., additional, Figueroa, A. I., additional, Baker, A. A., additional, van der Laan, G., additional, Duffy, L. B., additional, Shafer, P., additional, Klewe, C., additional, Arenholz, E., additional, Cavill, S. A., additional, Childress, J. R., additional, and Katine, J. A., additional

Published
2017
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3. Observation of vortex dynamics in arrays of nanomagnets

Author

Yu, W., primary, Keatley, P. S., additional, Gangmei, P., additional, Marcham, M. K., additional, Loughran, T. H. J., additional, Hicken, R. J., additional, Cavill, S. A., additional, van der Laan, G., additional, Childress, J. R., additional, and Katine, J. A., additional

Published
2015
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6. Phase-resolved x-ray ferromagnetic resonance measurements of spin pumping in spin valve structures

Author

Marcham, M. K., primary, Shelford, L. R., additional, Cavill, S. A., additional, Keatley, P. S., additional, Yu, W., additional, Shafer, P., additional, Neudert, A., additional, Childress, J. R., additional, Katine, J. A., additional, Arenholz, E., additional, Telling, N. D., additional, van der Laan, G., additional, and Hicken, R. J., additional

Published
2013
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9. State diagram of nanopillar spin valves with perpendicular magnetic anisotropy

Author

Le Gall, S., primary, Cucchiara, J., additional, Gottwald, M., additional, Berthelot, C., additional, Lambert, C.-H., additional, Henry, Y., additional, Bedau, D., additional, Gopman, D. B., additional, Liu, H., additional, Kent, A. D., additional, Sun, J. Z., additional, Lin, W., additional, Ravelosona, D., additional, Katine, J. A., additional, Fullerton, Eric E., additional, and Mangin, S., additional

Published
2012
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12. Effect of microwave irradiation on spin-torque-driven magnetization precession in nanopillars with magnetic perpendicular anisotropy

Author

Reckers, N., primary, Cucchiara, J., additional, Posth, O., additional, Hassel, C., additional, Römer, F. M., additional, Narkowicz, R., additional, Gallardo, R. A., additional, Landeros, P., additional, Zähres, H., additional, Mangin, S., additional, Katine, J. A., additional, Fullerton, E. E., additional, Dumpich, G., additional, Meckenstock, R., additional, Lindner, J., additional, and Farle, M., additional

Published
2011
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26. Dependence of spin pumping and spin transfer torque upon Ni81Fe19 thickness in Ta/Ag/Ni81Fe19/Ag/Co2MnGe/Ag/Ta spin-valve structures.

Author

Durrant, C. J., Shelford, L. R., Valkass, R. A. J., Hicken, R. J., Figueroa, A. I., Baker, A. A., van der Laan, G., Duffy, L. B., Shafer, P., Klewe, C., Arenholz, E., Cavill, S. A., Childress, J. R., and Katine, J. A.

Subjects
*NICKEL isotopes, *SPIN transfer torque, TANTALUM isotopes
Abstract

Spin pumping has been studied within Ta/Ag/Ni81Fe19 (0-5 nm)/Ag (6 nm)/Co2MnGe (5 nm)/Ag/Ta large-area spin-valve structures, and the transverse spin current absorption of Ni81Fe19 sink layers of different thicknesses has been explored. In some circumstances, the spin current absorption can be inferred from the modification of the Co2MnGe source layer damping in vector network analyzer ferromagnetic resonance (VNA-FMR) experiments. However, the spin current absorption is more accurately determined from element-specific phase-resolved x-ray ferromagnetic resonance (XFMR) measurements that directly probe the spin transfer torque (STT) acting on the sink layer at the source layer resonance. Comparison with a macrospin model allows the real part of the effective spin mixing conductance to be extracted. We find that spin current absorption in the outer Ta layers has a significant impact, while sink layers with thicknesses of less than 0.6 nm are found to be discontinuous and superparamagnetic at room temperature, and lead to a noticeable increase of the source layer damping. For the thickest 5-nm sink layer, increased spin current absorption is found to coincide with a reduction of the zero frequency FMR linewidth that we attribute to improved interface quality. This study shows that the transverse spin current absorption does not follow a universal dependence upon sink layer thickness but instead the structural quality of the sink layer plays a crucial role. [ABSTRACT FROM AUTHOR]

Published
2017
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