Científicos observan átomos girando hacia atrás en un experimento cuántico

Un equipo internacional de investigadores ha observado directamente, por primera vez, la transferencia de momento angular en un cristal, revelando una inversión inesperada en la dirección de rotación atómica. El descubrimiento, logrado con potentes pulsos de láser de terahercios sobre seleniuro de bismuto, pone de relieve un efecto cuántico vinculado a la simetría del cristal. Los hallazgos fueron publicados en Nature Physics.

El estudio fue dirigido por científicos del Helmholtz-Zentrum Dresden-Rossendorf, el Instituto Fritz Haber de la Sociedad Max Planck y socios en Berlín, Dresde, Jülich y Eindhoven. Los investigadores utilizaron pulsos láser ultra fuertes para impulsar las vibraciones de la red hacia un movimiento circular y rastrearon las interacciones entre las vibraciones acopladas en el material.

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