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Voltage-driven charge-mediated fast 180 degree magnetization switching in nanoheterostructure at room temperature

Yi, Min ; Zhang, Hongbin ; Xu, Bai-Xiang (2017)
Voltage-driven charge-mediated fast 180 degree magnetization switching in nanoheterostructure at room temperature.
In: npj Computational Materials, 3 (1)
doi: 10.1038/s41524-017-0043-x
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

Voltage-driven 180° magnetization switching without electric current provides the possibility for revolutionizing the spintronics. We demonstrated the voltage-driven charge-mediated 180° magnetization switching at room temperature by combining first-principles calculations and temperature-dependent magnetization dynamics simulation. The electric field (E)-induced interface charge is found to allow a giant modulation of the magnetic anisotropy (K) of the nanomagnet. Particularly K is revealed to vary linearly with respect to E and the epitaxial strain. Magnetization dynamics simulations using the so-obtained K show that both in-plane and perpendicular 180° switching can be achieved by E pulses. The temperature effect renders the 180° switching as probability events. Statistical analysis indicates a fast (around 4 ns) and low-error-probability 180° switching achievable at room temperature by controlling the magnitude of E and the pulse width. The study inspires the rational design of miniaturized nanoscale spintronic devices where thermal fluctuation has a great impact.

Typ des Eintrags: Artikel
Erschienen: 2017
Autor(en): Yi, Min ; Zhang, Hongbin ; Xu, Bai-Xiang
Art des Eintrags: Bibliographie
Titel: Voltage-driven charge-mediated fast 180 degree magnetization switching in nanoheterostructure at room temperature
Sprache: Englisch
Publikationsjahr: 22 September 2017
Verlag: Nature
Titel der Zeitschrift, Zeitung oder Schriftenreihe: npj Computational Materials
Jahrgang/Volume einer Zeitschrift: 3
(Heft-)Nummer: 1
DOI: 10.1038/s41524-017-0043-x
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Kurzbeschreibung (Abstract):

Voltage-driven 180° magnetization switching without electric current provides the possibility for revolutionizing the spintronics. We demonstrated the voltage-driven charge-mediated 180° magnetization switching at room temperature by combining first-principles calculations and temperature-dependent magnetization dynamics simulation. The electric field (E)-induced interface charge is found to allow a giant modulation of the magnetic anisotropy (K) of the nanomagnet. Particularly K is revealed to vary linearly with respect to E and the epitaxial strain. Magnetization dynamics simulations using the so-obtained K show that both in-plane and perpendicular 180° switching can be achieved by E pulses. The temperature effect renders the 180° switching as probability events. Statistical analysis indicates a fast (around 4 ns) and low-error-probability 180° switching achievable at room temperature by controlling the magnitude of E and the pulse width. The study inspires the rational design of miniaturized nanoscale spintronic devices where thermal fluctuation has a great impact.

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Mechanik Funktionaler Materialien
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien
Hinterlegungsdatum: 04 Okt 2017 08:55
Letzte Änderung: 25 Jul 2024 08:03
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