Scientists discover atoms suddenly spinning backward in quantum experiment
Scientists have observed a unique quantum effect where atomic rotations in a crystal can suddenly reverse direction. This discovery was made using powerful terahertz laser pulses, allowing researchers to track angular momentum movement for the first time. The findings could enhance understanding of magnetism and the control of advanced quantum materials.
- ▪Researchers used terahertz laser pulses to trigger atomic rotations in a crystal.
- ▪The direction of rotation can unexpectedly flip as momentum is transferred.
- ▪The study provides new insights into the fundamental origins of magnetism.
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Science News from research organizations Scientists discover atoms suddenly spinning backward in quantum experiment Scientists used powerful laser pulses to uncover a bizarre quantum effect where atomic rotations inside a crystal suddenly reverse direction. Date: May 24, 2026 Source: Helmholtz-Zentrum Dresden-Rossendorf Summary: Scientists have directly watched angular momentum move through a crystal for the very first time — and discovered a bizarre twist along the way. Using ultra-powerful terahertz laser pulses, researchers triggered tiny atomic rotations inside a quantum material and found that the direction of rotation can unexpectedly flip as momentum is transferred.
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