Spatiotemporal intensity-cycling microscopy unveils many-body interactions and correlated transport in van der Waals semiconductors.

Intensity-cycling transient scattering microscopy isolates single-particle versus multi-particle transport in van der Waals semiconductors, enabling correlated transport imaging and many-body interaction tracking.

• Why it matters: Spatiotemporal optical microscopy can map carrier propagation, but it cannot reliably separate single-particle from multi-particle quantum states, limiting access to many-body correlations behind complex phase behavior.
• What they did: The authors extend intensity cycling from multidimensional spectroscopy into the spatiotemporal domain and apply it with transient scattering microscopy to selectively image different transport regimes in van der Waals semiconductors.
• The result: They show clean single-particle charge transport with high signal-to-noise, track exciton-exciton annihilation, map dielectric disorder at high throughput, and image polaronic Mott transition emergence and correlated transport in a superatomic solid.

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