Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy

Hong Ju Suh; Kyung Jin Lee

doi:10.1016/j.cap.2008.10.004

Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy

Hong Ju Suh, Kyung Jin Lee

Department of Materials Science and Engineering

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

11 Citations (Scopus)

Abstract

Solving the Landau-Lifshitz-Gilbert-Slonczewski equation numerically, we show that switching current density for the current-induced magnetization switching decreases by introducing the perpendicular anisotropy smaller than the out-of-plane demagnetization energy in the switched layer as predicted by theories. Interestingly, the introduction of the perpendicular anisotropy does not decrease the thermal stability of magnetization, but rather slightly increases. The reduction in switching current density results from the decrease of demagnetization effect whereas the increase of thermal stability results from the decrease of attempt frequency.

Original language	English
Pages (from-to)	985-988
Number of pages	4
Journal	Current Applied Physics
Volume	9
Issue number	5
DOIs	https://doi.org/10.1016/j.cap.2008.10.004
Publication status	Published - 2009 Sept

Keywords

Current-induced magnetization switching
Perpendicular anisotropy
Spin-transfer torque

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

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10.1016/j.cap.2008.10.004

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title = "Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy",

abstract = "Solving the Landau-Lifshitz-Gilbert-Slonczewski equation numerically, we show that switching current density for the current-induced magnetization switching decreases by introducing the perpendicular anisotropy smaller than the out-of-plane demagnetization energy in the switched layer as predicted by theories. Interestingly, the introduction of the perpendicular anisotropy does not decrease the thermal stability of magnetization, but rather slightly increases. The reduction in switching current density results from the decrease of demagnetization effect whereas the increase of thermal stability results from the decrease of attempt frequency.",

keywords = "Current-induced magnetization switching, Perpendicular anisotropy, Spin-transfer torque",

author = "Suh, {Hong Ju} and Lee, {Kyung Jin}",

note = "Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy, Republic of Korea.",

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doi = "10.1016/j.cap.2008.10.004",

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T1 - Reduction in switching current density for current-induced magnetization switching without loss of thermal stability

T2 - Effect of perpendicular anisotropy

AU - Suh, Hong Ju

AU - Lee, Kyung Jin

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy, Republic of Korea.

PY - 2009/9

Y1 - 2009/9

N2 - Solving the Landau-Lifshitz-Gilbert-Slonczewski equation numerically, we show that switching current density for the current-induced magnetization switching decreases by introducing the perpendicular anisotropy smaller than the out-of-plane demagnetization energy in the switched layer as predicted by theories. Interestingly, the introduction of the perpendicular anisotropy does not decrease the thermal stability of magnetization, but rather slightly increases. The reduction in switching current density results from the decrease of demagnetization effect whereas the increase of thermal stability results from the decrease of attempt frequency.

AB - Solving the Landau-Lifshitz-Gilbert-Slonczewski equation numerically, we show that switching current density for the current-induced magnetization switching decreases by introducing the perpendicular anisotropy smaller than the out-of-plane demagnetization energy in the switched layer as predicted by theories. Interestingly, the introduction of the perpendicular anisotropy does not decrease the thermal stability of magnetization, but rather slightly increases. The reduction in switching current density results from the decrease of demagnetization effect whereas the increase of thermal stability results from the decrease of attempt frequency.

KW - Current-induced magnetization switching

KW - Perpendicular anisotropy

KW - Spin-transfer torque

UR - http://www.scopus.com/inward/record.url?scp=67349173921&partnerID=8YFLogxK

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DO - 10.1016/j.cap.2008.10.004

M3 - Article

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SN - 1567-1739

VL - 9

SP - 985

EP - 988

JO - Current Applied Physics

JF - Current Applied Physics

IS - 5

ER -

Reduction in switching current density for current-induced magnetization switching without loss of thermal stability: Effect of perpendicular anisotropy

Abstract

Keywords

ASJC Scopus subject areas

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