Dynamic excitations of nanomagnet magnetization driven by spin-polarized current

Dynamic excitations of nanomagnet magnetization driven by spin-polarized current

A current of spin-polarized electrons injected into a metallic nanomagnet exerts torque on the magnetization and may excite magnetization autooscillations. The aim of present work is to study spectral and transient properties of such excitations. We study current-driven excitations in a permalloy (P...

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Bibliographische Detailangaben
Hauptverfasser: Krivorotov, I.N., Emley, N.C., Sankey, J.C., Ralph, D.C., Buhrman, R.A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
AC generators
Current measurement
DC generators
Magnetic anisotropy
Magnetization
Oscilloscopes
Physics
Spin valves
Torque
Voltage
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Beschreibung
Zusammenfassung:A current of spin-polarized electrons injected into a metallic nanomagnet exerts torque on the magnetization and may excite magnetization autooscillations. The aim of present work is to study spectral and transient properties of such excitations. We study current-driven excitations in a permalloy (Py) elliptical nanomagnet. We also make time-resolved measurements of the ac voltage generated by the current-driven excitations using a storage oscilloscope.
ISSN:2150-4598
2150-4601
DOI:10.1109/INTMAG.2006.375412