{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"6fcbcf495eb28591cbebb5471114ab9a7b6302b3440c699acd33969a8bb5de88","created":"2026-10-03T07:17:59Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"55eca3e5aede6d7d0984c3f81af177cdc07b082ffde3244e958e86a9a9011ebe","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"cm.fese-sto-interface.transport-tc","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Different methods give very different transition temperatures, from about 40 K in transport on protected films and about 65 K in magnetic measurements to a single report above 100 K, so even the basic number is uncertain.","posed_since":"","precise":"Ex situ transport on capped monolayers gives onset $T_c \\sim 40\\,\\mathrm{K}$ with lower zero-resistance temperatures, diamagnetic (Meissner) onset appears near 65 K (Zhang et al., Science Bulletin 60, 1301, 2015), photoemission gap closing occurs near 55-65 K, and one in situ four-probe study reported $T_c$ above 100 K (Ge et al. 2015) that has not been reproduced. Determine the onset and zero-resistance $T_c$ of uncapped monolayer FeSe/SrTiO3 in situ, and whether the gap-closing temperature marks phase coherence or only pairing.","problem_ref":null,"references":"","settled_by":"In situ transport and mutual-inductance measurements on uncapped films by several groups, with the fluctuation regime characterized.","status_note":"Nernst measurements on ultrathin FeSe/SrTiO3 find superconducting fluctuations only below about 1.2 times the onset $T_c$ and suggest the gap seen above $T_c$ in photoemission may have a non-superconducting origin (Kobayashi, Ogawa and Maeda, Physical Review B 112, 094525, 2025).","title":"What is the zero-resistance transition temperature of monolayer FeSe on SrTiO3?","topic_ref":"1f178118a7bca814d2960d4dbbdc31dda05ef4474c27f73ec247fd952130449c"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"f1b919a43761d8c21e910f6bbe40db80a3ece07e6a002d8b48a5e397969eac69","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"191c477bfe581794d67c9e421a63b61564bbbb2732780309fdf2e50c1be4972d","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"TXlvHyvd2OgnwZlO4qeSl4qim-qNS6aiMGgw7GSELRnewyb4Msm8_GN881oi-pgcbTBs49wizKF3o9X-6gvdBg"},"schema":"pubphys.envelope/1"},"record_hash":"f1b919a43761d8c21e910f6bbe40db80a3ece07e6a002d8b48a5e397969eac69","leaf_index":988}