{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"470147a72ffeef4248a9d93bd8bbb9fcdd8d0e36d095532996550a53d84c63bd","created":"2026-10-03T07:17:59Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"a0c710b66b4721d31c3a2f6ddae2d026e8ed176fec4bd7e50445b2e64111dc41","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"cm.halide-perovskites.rashba-recombination","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Heavy lead atoms and a fluctuating lattice could split the energy bands by spin, making light emission slightly indirect and slower. Whether this effect is large enough to matter is disputed.","posed_since":"","precise":"Inversion-breaking lattice fluctuations in MAPbI3 could produce a dynamic Rashba splitting that offsets the band extrema in momentum and lowers the bimolecular radiative coefficient $B$ (measured of order $1e-10\\,\\mathrm{cm}^3/\\mathrm{s}$). Determine the size of the room-temperature splitting (static or dynamic, in meV) and its effect on $B$, with photon recycling separated out. An answer is the splitting value and the fractional change of $B$.","problem_ref":null,"references":"","settled_by":"Spin- and momentum-resolved photoemission or circularly polarized spectroscopy at room temperature combined with molecular-dynamics band-structure calculations.","status_note":"","title":"Does dynamic Rashba splitting slow radiative recombination in perovskites","topic_ref":"56bceea3ae46655d4fa657e5e962c04f828a636d2ee81dabedfcad2bf6f6582c"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"375d3ac6f9ac3f89bf2a709343cbddaadcdb0e7a36cc80375df05457330dfeb4","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"157078ffcb29f1781b8484c2bf3ab2f6371c42c3f297dbfd71f521ba45cd17ea","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"mshENvQdxzGVfkSL54CB5QaFKIB2AfWworRp6StWGvgN0KBMArr3C_nQWwF6rp_Pvg0F1uWmWTTo7NfyYkDsAA"},"schema":"pubphys.envelope/1"},"record_hash":"375d3ac6f9ac3f89bf2a709343cbddaadcdb0e7a36cc80375df05457330dfeb4","leaf_index":1008}