{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"374336b941d1d8c4863e37a0c2be697482e84eeb05345b23d649ae48eae73606","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["1ded679c5ad8b8ea375c402469b19aa10eda14eeafcea7513745efd2fc8cc18d","5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"db132f75c21a2c1768f62f51462978d86769f2efaba2bee40aab34474e1e60f2","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"cm.light-induced-sc.metastable-lifetime","kind":"phenomenon","literature_status":"open","n":"1","parents":[{"note":"","parent_revision":"1ded679c5ad8b8ea375c402469b19aa10eda14eeafcea7513745efd2fc8cc18d","relation":"special_case"}],"plain":"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.","posed_since":"","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.","problem_ref":null,"references":"","settled_by":"Time-resolved structural and optical measurements tracking the metastable state, with a model reproducing lifetime(fluence, T).","status_note":"","title":"Why the light-induced superconducting-like state lasts nanoseconds","topic_ref":"a4f7f1ae5dbd43b5f6c513a7a2b6e1f0d22cc39b03da4e8f25e23fa5acb4d309"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"64558e2bb4f98be9d1b45f5ff2228ce52ff0c8d788c7663b7408d2dbddff8fed","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"18cddd640640643fd3f9b593aa1cffcee1ad1d23e0fa1767423e940761764412","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"Gy9snGQFnjBFBguxtAkn-1RHPKHAVwUkYollhGKpNtvSUlgRU20wdXA_t4XPfXi1muzs4ChAXZ1_y7kVH6HIBg"},"schema":"pubphys.envelope/1"},"record_hash":"64558e2bb4f98be9d1b45f5ff2228ce52ff0c8d788c7663b7408d2dbddff8fed","leaf_index":1067}