Tuning the frequencies of the normal modes of a nanopillar oscillator through the magnetostatic interaction

Autor:	Sebastian Allende, D. Mancilla-Almonacid, Dora Altbir, Simón Oyarzún, Rodrigo Arias
Rok vydání:	2017
Předmět:	010302 applied physics Physics Condensed matter physics Exchange interaction 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Normal mode Spin wave 0103 physical sciences Torque Critical current 0210 nano-technology Nanopillar Spin-½
Zdroj:	Physical Review B. 96
ISSN:	2469-9969 2469-9950
DOI:	10.1103/physrevb.96.184424
Popis:	A detailed analytical and numerical study of the spin wave modes of the free layer of a nanopillar spin torque nano-oscillator (STNO) has been performed as a function of the magnetostatic interaction between the free and the fixed magnetic layers. Results for higher frequency normal modes show that the magnetostatic interaction does not appreciably affect the spin wave frequencies and the critical current densities, due to more relevance of the exchange interaction in these modes. For lower frequency normal modes we observe a decrease in frequency and in the critical current density for auto-oscillations when the strength of the magnetostatic interaction between the layers increases, an effect that may be appreciable.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc52f13172cca10eb6bf2d7974ce821a https://doi.org/10.1103/physrevb.96.184424 Zobrazit plný text záznamu