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Updated: Feb 21, 2026

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Resonancia de espín electrónico de alta frecuencia en YMn6Sn6 con red de Kagome

Lovia Ofori¹, Johan van Tol², Nathan Tolva³

¹Physics, The University of Texas at El Paso, The University of Texas at El Paso, El Paso, TX 79968, USA, El Paso, Texas, 79968, United States.

Journal of physics. Condensed matter : an Institute of Physics journal

|February 20, 2026

Resumen

La resonancia de espín electrónico de muy alta frecuencia (VHF-ESR) reveló distintas fases magnéticas en imanes de Kagome metálicos YMn6Sn6. El estudio identificó fases de espiral cónica transversal, en abanico y ferromagnética forzada, lo que indica correlaciones de espín 2D para aplicaciones espintrónicas.

Área de la Ciencia:

Física de la Materia Condensada
Ciencia de Materiales
Magnetismo

Sus antecedentes:

Los imanes de Kagome metálicos exhiben propiedades y fases magnéticas complejas.
YMn6Sn6 (Y166) es un material notable dentro de esta clase, que muestra múltiples fases magnéticas.
Comprender las interacciones magnéticas locales es crucial para caracterizar estos materiales.

Principales métodos:

Se empleó espectroscopía de resonancia de espín electrónico de muy alta frecuencia (VHF-ESR).
Se estudió el comportamiento de la RSE dependiente de la temperatura (5 K - 350 K) a frecuencias de microondas (120, 240, 300 GHz).
Se analizaron las orientaciones del campo magnético en el plano (IP) y fuera del plano (OOP) y la dependencia angular.

Principales resultados:

Se identificaron fases magnéticas de espiral cónica transversal (TCS), en abanico (FL) y ferromagnética forzada (FF).
Se observó una dependencia angular similar a (3cos2θ - 1) del campo de resonancia a 290 K y 240 GHz, lo que indica correlaciones de espín 2D.
La fase de espiral distorsionada (DS) no se observó debido a los rangos de campo de medición.

Conclusiones:

La VHF-ESR es eficaz para sondear interacciones magnéticas microscópicas en Y166.
Los hallazgos revelan fases magnéticas clave y confirman correlaciones de espín 2D.
Los resultados tienen aplicaciones potenciales en comunicaciones de microondas y terahercios de alta frecuencia, y espintrónica.

Palabras clave:

Resonancia de espín electrónico Imanes de Kagome Magnetismo Correlaciones de espín

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