Revision 2

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Title: Why the light-induced superconducting-like state lasts nanoseconds
Plain · changed: Revision 1: The state in K3C60 survives for nanoseconds, thousands of times longer than the light pulse, which is hard to explain for a driven state. The mechanism of this long life is unknown.; Revision 2: The state in $\mathrm{K_3C_{60}}$ survives for nanoseconds, thousands of times longer than the light pulse, which is hard to explain for a driven state. The mechanism of this long life is unknown.
Precise: Given a pump of duration $\sim 1\,\mathrm{ps}$ and a metastable state lasting nanoseconds well above $T_c$, identify what stores the nonequilibrium condition (long-lived phonon or orbital populations, structural metastability, or local heating with slow cooling) and predict the lifetime's dependence on fluence and temperature. Answer: a mechanism quantitatively matching measured lifetimes.
Settled by: Time-resolved structural and optical measurements tracking the metastable state, with a model reproducing lifetime(fluence, T).
Kind: phenomenon
Answer type: mechanism
References: (empty)
Literature status: open
Status note: (empty)
Posed since: (empty)

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