{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"b7c652bd47932051a5c4c64ad9ba143380589b8b0d8710194c85c650b5987d82","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["64558e2bb4f98be9d1b45f5ff2228ce52ff0c8d788c7663b7408d2dbddff8fed","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"f788f9391655f669a6b7a86c6ca4545ec6f7e3ce6075136edc7b71481f24f185","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":"2","parents":[],"plain":"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.","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":"64558e2bb4f98be9d1b45f5ff2228ce52ff0c8d788c7663b7408d2dbddff8fed","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":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"a1c1add22402e07b8a676f72d7897d5b403fdbf6e14bafbc8bdda2998aa0ba38","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"5393b22a15fef1fc504bd67c7fb226afc96d06ae70f89a2fb333e9f4643ede66","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"-5gGVND9cNBiyhgJ-iJItAiDEvJ9-uUwn3T5aujaB8S7hO54qi6xt0pD0vFHT_wUiMQcbf6WumMVzJPbMBOSAw"},"schema":"pubphys.envelope/1"},"record_hash":"a1c1add22402e07b8a676f72d7897d5b403fdbf6e14bafbc8bdda2998aa0ba38","leaf_index":2910}