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Transición altermagnética controlada por campo eléctrico para computación neuromórfica

Zhiyuan Duan1,2, Peixin Qin1,2, Chengyan Zhong3

  • 1School of Materials Science and Engineering, Beihang University; Beijing 100191, China.

Journal of the American Chemical Society
|December 11, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores lograron el control de campo eléctrico de ultrabaja potencia del altermagnetismo en MnTe utilizando tensión. Esto permite una manipulación eficiente de los estados magnéticos para aplicaciones informáticas neuromórficas de bajo consumo de energía.

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Área de la Ciencia:

  • Física de la materia condensada
  • Ciencias de los materiales
  • La tecnología Spintronics

Sus antecedentes:

  • Los altermagnetos son una nueva fase magnética con potencial para la espintrónica ultrarrápida.
  • El control eficiente de los estados altermagnéticos es crucial pero desafiante.
  • Los métodos existentes pueden implicar un consumo significativo de energía.

Objetivo del estudio:

  • Para demostrar el control de campo eléctrico de ultrabaja potencia del altermagnetismo en MnTe.
  • Para explorar el acoplamiento mediado por tensión para manipular estados magnéticos.
  • Investigar la aplicación de materiales altermagnéticos en la computación neuromórfica.

Principales métodos:

  • Fabricación de heteroestructuras de MnTe y PMN-PT.
  • Aplicación de campos eléctricos para inducir deformaciones piezoeléctricas.
  • Medición de la temperatura de transición de fase magnética y de la modulación de la resistencia.
  • Implementación en una red neuromórfica de Hopfield.

Principales resultados:

  • Calentamiento de Joule insignificante durante el control del campo eléctrico.
  • Modulación de la temperatura de Néel (310 K a 328 K) mediante el esfuerzo.
  • Intercambio reversible de la división del espín altermagnético.
  • Hasta un 9,7% de modulación de resistencia alrededor de la transición de fase magnética.
  • Precisión de reconocimiento de patrones del 100% en una red neuromórfica con un 40% de ruido.

Conclusiones:

  • El control de campo eléctrico es una estrategia viable de baja potencia para la manipulación altermagnética.
  • Los efectos mediados por deformación en las heteroestructuras de MnTe permiten una modulación significativa de la resistencia.
  • Los materiales altermagnéticos son prometedores para la computación neuromórfica con eficiencia energética.