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Propagación de Magnones de Superficie en un Antiferromagneto de van der Waals
Jilei Chen1, Kei Yamamoto2,3, Chenxu Kang4
1International Quantum Academy, Shenzhen 518048, China.
Physical review letters
|February 22, 2026
Resumen
Los investigadores observaron la propagación unidireccional de magnones de superficie en antiferromagnetos de van der Waals. Este descubrimiento allana el camino para nuevos dispositivos magnónicos no recíprocos que operan en frecuencias de microondas.
Área de la Ciencia:
- Física de la Materia Condensada
- Ciencia de Materiales
Sus antecedentes:
- Los imanes de van der Waals ofrecen nuevas posibilidades para la espintrónica y la magnónica.
- Los materiales antiferromagnéticos se están explorando para aplicaciones magnéticas avanzadas.
Objetivo del estudio:
- Investigar la propagación de magnones de superficie en el antiferromagneto de van der Waals CrSBr.
- Explorar el potencial de los dispositivos magnónicos no recíprocos.
Principales métodos:
- Observación experimental de la propagación de magnones de superficie.
- Modelado teórico de ondas magnetostáticas en antiferromagnetos.
Principales resultados:
- Se observó la propagación casi unidireccional de modos de magnones antiferromagnéticos.
- La dirección de propagación de los magnones fue controlable por el campo magnético.
- Operación a frecuencia de gigahertzios debido a un débil acoplamiento intercapa.
Conclusiones:
- Los magnones de superficie en CrSBr exhiben propagación unidireccional controlable.
- Los antiferromagnetos de van der Waals son adecuados para aplicaciones magnónicas no recíprocas.
- Potencial para dispositivos que operan en frecuencias de microondas.
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