Ilmuwan amati atom berputar balik dalam eksperimen kuantum

Tim peneliti internasional untuk pertama kalinya mengamati secara langsung transfer momentum sudut dalam kristal, yang mengungkap pembalikan arah rotasi atom yang tak terduga. Penemuan yang dicapai dengan pulsa laser terahertz berkekuatan tinggi pada bismut selenida ini menyoroti efek kuantum yang terkait dengan simetri kristal. Temuan tersebut dipublikasikan dalam Nature Physics.

Studi ini dipimpin oleh para ilmuwan dari Helmholtz-Zentrum Dresden-Rossendorf, Fritz Haber Institute dari Max Planck Society, serta mitra di Berlin, Dresden, Jülich, dan Eindhoven. Para peneliti menggunakan pulsa laser yang sangat kuat untuk menggerakkan getaran kisi menjadi gerakan melingkar dan melacak interaksi antara getaran yang terhubung di dalam material tersebut.

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