Why the light-induced superconducting-like state lasts nanoseconds
In plain words
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 statement
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.
What would settle it
Time-resolved structural and optical measurements tracking the metastable state, with a model reproducing lifetime(fluence, T).
Parent problems
- Special case of What is the photoexcited state of $\mathrm{K_3C_{60}}$ above $T_{\mathrm{c}}$? · open · from revision 1 The parent was revised since revision 1: it now states another question.
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