论文信息 - Clocking the Collapse of a Mott Gap

Clocking the Collapse of a Mott Gap

We probe the dynamics of band gap collapse in the Mott (electronic) insulator ETF2TCNQ and Peierls (structural) insulator K-TCNQ. The collapse of the Mott gap is a purely electronic process occurring within 20 fs. In the Peierls insulator, the gap collapse takes 300 fs, only after a lattice distortion has relaxed.

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