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

    Research output: Contribution to journalArticlepeer-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 languageEnglish
    Pages (from-to)985-988
    Number of pages4
    JournalCurrent Applied Physics
    Volume9
    Issue number5
    DOIs
    Publication statusPublished - 2009 Sept

    Bibliographical 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.

    Keywords

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

    ASJC Scopus subject areas

    • General Materials Science
    • General Physics and Astronomy

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