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

Effect of perpendicular anisotropy

Hong Ju Suh, Kyoung Jin Lee

Research output: Contribution to journalArticle

10 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 languageEnglish
Pages (from-to)985-988
Number of pages4
JournalCurrent Applied Physics
Volume9
Issue number5
DOIs
Publication statusPublished - 2009 Sep 1

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Induced currents
Demagnetization
Magnetization
Anisotropy
Thermodynamic stability
thermal stability
Current density
demagnetization
current density
magnetization
anisotropy
energy

Keywords

  • Current-induced magnetization switching
  • Perpendicular anisotropy
  • Spin-transfer torque

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

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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.",
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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, Kyoung Jin

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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

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