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La conmutación inducida por corriente de los dominios en los dispositivos magnéticos multicapa
1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853, USA. School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA.
Science (New York, N.Y.)
|August 7, 1999
Resumen
Se observó una conmutación magnética inducida por corriente en estructuras de cobalto/cobre/cobalto. Las corrientes polarizadas por espín manipularon de manera controlable las orientaciones del dominio magnético entre estados paralelos y antiparalelas.
Área de la Ciencia:
- Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada
- Ciencia de los materiales ciencia de los materiales.
- Spintronics es una empresa de Spintronics.
Sus antecedentes:
- La conmutación magnética inducida por corriente es un fenómeno clave en la espintrónica.
- Comprender la manipulación de los momentos magnéticos es crucial para el desarrollo de dispositivos magnéticos avanzados.
Objetivo del estudio:
- Para investigar la conmutación inducida por corriente en estructuras sándwich de cobalto/cobre/cobalto.
- Para demostrar la manipulación controlable de las orientaciones del dominio magnético.
Principales métodos:
- Fabricación de estructuras sándwich de cobalto / cobre / cobalto.
- Aplicación de pulsos de corriente perpendiculares a las capas.
- Observación de la conmutación del dominio magnético.
Principales resultados:
- Se observó con éxito la conmutación inducida por corriente de los momentos magnéticos.
- Se lograron de manera controlable configuraciones magnéticas estables paralelas y antiparalelas.
- Los resultados se alinean con las predicciones teóricas de torque de corriente polarizada por espín.
Conclusiones:
- Las corrientes polarizadas por espín pueden cambiar efectivamente las orientaciones del dominio magnético en estructuras en capas.
- Las interacciones de intercambio local juegan un papel importante en los efectos magnéticos inducidos por la corriente.
- Este trabajo apoya el potencial de torque de transferencia de giro en aplicaciones de memoria magnética.
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