{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"92c148b28c5ce3a4e9211f0572ef967103292e55ade8aaca2e350b4a0a677303","created":"2026-10-03T07:17:59Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"4b5e3518cb72205756f27e3b5bb957eca299cc6bf1a41d465229e670540df4f9","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"cm.dilute-superconductivity.laalo3-dome","kind":"phenomenon","literature_status":"open","n":"1","parents":[],"plain":"Where LaAlO3 meets SrTiO3, a thin conducting sheet forms that superconducts below about $0.3\\,\\mathrm{K}$, and a gate voltage tunes its transition temperature up and then down. What causes this dome-shaped curve is unresolved.","posed_since":"2008","precise":"The two-dimensional electron gas at (001) LaAlO3/SrTiO3, with sheet density $n_{s}$ of order $1e13\\,\\mathrm{cm}^{-2}$, shows a gate-tuned dome $T_{c}(V_{g})$ with maximum about $0.2\\ \\text{to}\\ 0.3\\,\\mathrm{K}$ near a Lifshitz transition where $d_{xz}/d_{yz}$ subbands fill and Rashba spin-orbit coupling grows. Determine the cause of the decrease of $T_{c}$ on both sides of the maximum (multiband pairing, loss of superfluid stiffness and phase fluctuations, change of dielectric screening) from a calculation matching $T_{c}(n_{s})$, superfluid stiffness and tunneling gap data. An answer is a quantitative model of the dome.","problem_ref":null,"references":"","settled_by":"Simultaneous measurement of gap, superfluid stiffness and $T_{c}$ versus gate voltage on one device, reproduced by a model.","status_note":"","title":"Origin of the superconducting dome at LaAlO3/SrTiO3 interfaces","topic_ref":"1691597bf36b5c4ae6e8e76cab311c80818c254bf6df91fc1604cdef43bb8e76"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"a2658f3a01902ae9904f64492911f8a1b1e2f4ac9554a547b6e4692c73a43fcd","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"c81eb962af994f03a5ed66b9dea39c64aa5b2a9966c91727a5d1a089174c6b8e","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"PA3JlWd3-uSk62R7F-rdwNKZJQT6sbFRoBzDtpCl8SyXFdxqs4sFgTw6vduEnfmAbb00woFaCdw-6dkQyPCNBQ"},"schema":"pubphys.envelope/1"},"record_hash":"a2658f3a01902ae9904f64492911f8a1b1e2f4ac9554a547b6e4692c73a43fcd","leaf_index":945}