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Ruido de monopolio magnético

Ritika Dusad1, Franziska K K Kirschner2, Jesse C Hoke1,3

  • 1Department of Physics, Cornell University, Ithaca, NY, USA.

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|July 5, 2019
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Resumen
Este resumen es generado por máquina.

Los investigadores detectaron monopolos magnéticos, partículas hipotéticas, utilizando un espectrómetro de interferencia cuántica superconductor (SQUID, por sus siglas en inglés). Este avance revela un intenso ruido de magnetización y movimiento de carga correlacionado en los cristales Dy$_{2}$Ti$_{2}$O$_{7}$.

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Área de la Ciencia:

  • Física de la materia condensada
  • Física de las partículas
  • El magnetismo cuántico

Sus antecedentes:

  • Los monopolos magnéticos son partículas hipotéticas con una carga magnética cuantizada.
  • Los monopolos magnéticos emergentes se predicen teóricamente en los aislantes magnéticos de pirocloro lantánido como Dy$_{2}$Ti$_{2}$O$_{7}$.

Objetivo del estudio:

  • Desarrollar un espectrómetro basado en SQUID para detectar monopolos magnéticos.
  • Para medir el ruido de flujo magnético generado por los cristales Dy$_{2}$Ti$_{2}$O$_{7}$.

Principales métodos:

  • Desarrollo de un espectrómetro de ruido de flujo basado en SQUID.
  • Medición de la frecuencia del ruido del flujo magnético y de la dependencia de la temperatura en Dy$_{2}$ Ti$_{2}$ O$_{7}$.
  • Comparación de las funciones de correlación de flujo magnético simulado y medido.

Principales resultados:

  • Detección de las características de ruido de flujo magnético previstas para los plasmas de monopolio magnético.
  • Observación del ruido de magnetización intenso con dependencia característica de la frecuencia y la temperatura.
  • Pruebas de movimientos fuertemente correlacionados de cargas magnéticas.

Conclusiones:

  • El estudio proporciona evidencia experimental que apoya la existencia de monopolos magnéticos emergentes en Dy$_{2}$Ti$_{2}$O$_{7}$.
  • Los hallazgos validan las predicciones teóricas con respecto al comportamiento del plasma de monopolio magnético.
  • La constante de tiempo de recombinación de generación de milisegundos hace que el ruido amplificado sea audible.