Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy

D. Bedau; H. Liu; J. J. Bouzaglou; A. D. Kent; J. Z. Sun; J. A. Katine; E. E. Fullerton; S. Mangin

doi:10.1063/1.3284515

Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy

D. Bedau, H. Liu, J. J. Bouzaglou, A. D. Kent, J. Z. Sun, J. A. Katine, E. E. Fullerton, S. Mangin

Research output: Contribution to journal › Article › peer-review

Abstract

Spin-transfer switching with short current pulses has been studied in spin-valve nanopillars with perpendicularly magnetized free and reference layers. Magnetization switching with current pulses as short as 300 ps is demonstrated. The pulse amplitude needed to reverse the magnetization is shown to be inversely proportional to the pulse duration, consistent with a macrospin spin-transfer model. However, the pulse amplitude duration switching boundary depends on the applied field much more strongly than predicted by the zero temperature macrospin model. The results also demonstrate that there is an optimal pulse length that minimizes the energy required to reverse the magnetization.

Original language	English (US)
Article number	022514
Journal	Applied Physics Letters
Volume	96
Issue number	2
DOIs	https://doi.org/10.1063/1.3284515
State	Published - 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3284515

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title = "Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy",

abstract = "Spin-transfer switching with short current pulses has been studied in spin-valve nanopillars with perpendicularly magnetized free and reference layers. Magnetization switching with current pulses as short as 300 ps is demonstrated. The pulse amplitude needed to reverse the magnetization is shown to be inversely proportional to the pulse duration, consistent with a macrospin spin-transfer model. However, the pulse amplitude duration switching boundary depends on the applied field much more strongly than predicted by the zero temperature macrospin model. The results also demonstrate that there is an optimal pulse length that minimizes the energy required to reverse the magnetization.",

author = "D. Bedau and H. Liu and Bouzaglou, {J. J.} and Kent, {A. D.} and Sun, {J. Z.} and Katine, {J. A.} and Fullerton, {E. E.} and S. Mangin",

note = "Funding Information: The research at NYU was supported by USARO (Grant No. W911NF0710643).",

year = "2010",

doi = "10.1063/1.3284515",

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volume = "96",

journal = "Applied Physics Letters",

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T1 - Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy

AU - Bedau, D.

AU - Liu, H.

AU - Bouzaglou, J. J.

AU - Kent, A. D.

AU - Sun, J. Z.

AU - Katine, J. A.

AU - Fullerton, E. E.

AU - Mangin, S.

N1 - Funding Information: The research at NYU was supported by USARO (Grant No. W911NF0710643).

PY - 2010

Y1 - 2010

N2 - Spin-transfer switching with short current pulses has been studied in spin-valve nanopillars with perpendicularly magnetized free and reference layers. Magnetization switching with current pulses as short as 300 ps is demonstrated. The pulse amplitude needed to reverse the magnetization is shown to be inversely proportional to the pulse duration, consistent with a macrospin spin-transfer model. However, the pulse amplitude duration switching boundary depends on the applied field much more strongly than predicted by the zero temperature macrospin model. The results also demonstrate that there is an optimal pulse length that minimizes the energy required to reverse the magnetization.

AB - Spin-transfer switching with short current pulses has been studied in spin-valve nanopillars with perpendicularly magnetized free and reference layers. Magnetization switching with current pulses as short as 300 ps is demonstrated. The pulse amplitude needed to reverse the magnetization is shown to be inversely proportional to the pulse duration, consistent with a macrospin spin-transfer model. However, the pulse amplitude duration switching boundary depends on the applied field much more strongly than predicted by the zero temperature macrospin model. The results also demonstrate that there is an optimal pulse length that minimizes the energy required to reverse the magnetization.

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Ultrafast spin-transfer switching in spin valve nanopillars with perpendicular anisotropy

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