Spin torque characteristics for the asymmetric non-collinearly polarized ferromagnetic single-electron devices

    Research output: Contribution to journalArticle

    Abstract

    Spin-transfer torque due to spin polarized current, acting on the magnetic moment of a central electrode (island) of a single-electron ferromagnetic transistor has been theoretically calculated. The magnetic moments of the external electrodes are oriented non-collinearly with respect to the magnetic moment of the island. In an asymmetric situation under consideration, all the electrodes are made of various magnetic materials. The torque is calculated from the spin current absorbed by the island, and electric current flowing through the system is calculated in the sequential transport regime. The asymmetry in tunnelling processes leads to spin accumulation when the spin relaxation time is sufficiently long, which is also taken into account when calculating the spin torque.

    Original languageEnglish (US)
    Pages (from-to)971-975
    Number of pages5
    JournalMaterials Science- Poland
    Volume26
    Issue number4
    StatePublished - Dec 1 2008

    Fingerprint

    Electron devices
    Magnetic moments
    torque
    Torque
    Electrodes
    electrons
    magnetic moments
    Magnetic materials
    Electric currents
    Relaxation time
    electrodes
    Transistors
    Electrons
    magnetic materials
    electric current
    transistors
    relaxation time
    asymmetry

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

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    abstract = "Spin-transfer torque due to spin polarized current, acting on the magnetic moment of a central electrode (island) of a single-electron ferromagnetic transistor has been theoretically calculated. The magnetic moments of the external electrodes are oriented non-collinearly with respect to the magnetic moment of the island. In an asymmetric situation under consideration, all the electrodes are made of various magnetic materials. The torque is calculated from the spin current absorbed by the island, and electric current flowing through the system is calculated in the sequential transport regime. The asymmetry in tunnelling processes leads to spin accumulation when the spin relaxation time is sufficiently long, which is also taken into account when calculating the spin torque.",
    author = "Malgorzata Kowalik",
    year = "2008",
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    language = "English (US)",
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    pages = "971--975",
    journal = "Materials Science-Poland",
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    AU - Kowalik, Malgorzata

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    AB - Spin-transfer torque due to spin polarized current, acting on the magnetic moment of a central electrode (island) of a single-electron ferromagnetic transistor has been theoretically calculated. The magnetic moments of the external electrodes are oriented non-collinearly with respect to the magnetic moment of the island. In an asymmetric situation under consideration, all the electrodes are made of various magnetic materials. The torque is calculated from the spin current absorbed by the island, and electric current flowing through the system is calculated in the sequential transport regime. The asymmetry in tunnelling processes leads to spin accumulation when the spin relaxation time is sufficiently long, which is also taken into account when calculating the spin torque.

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