Time-Domain Measurements of Nanomagnet Dynamics Driven by Spin-Transfer Torques

Autor:	Ilya Krivorotov, Robert A. Buhrman, N. C. Emley, Daniel C. Ralph, S. I. Kiselev, Jack C. Sankey
Rok vydání:	2005
Předmět:	Physics Multidisciplinary Magnetic moment Condensed matter physics Magnet Dynamics (mechanics) Magnetic damping Torque Time domain Current (fluid) Nanomagnet
Zdroj:	Science. 307:228-231
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.1105722
Popis:	We present time-resolved measurements of gigahertz-scale magnetic dynamics caused by torque from a spin-polarized current. By working in the time domain, we determined the motion of the magnetic moment throughout the process of spin-transfer–driven switching, and we measured turn-on times of steady-state precessional modes. Time-resolved studies of magnetic relaxation allow for the direct measurement of magnetic damping in a nanomagnet and prove that this damping can be controlled electrically using spin-polarized currents.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e54e9bac1aa90e186a8608a41c9960aa https://doi.org/10.1126/science.1105722 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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