{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"37adcf95119cc262fef3c1d169a5864fdec9a29c52aa4a91c8e0868da5ea6b3d","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"eeb4c9d6d5c2d72be2f1f8d0b24abc04e6f6703672421ff4141a3ef3b9e5f84d","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"cm.kagome-metals.cdw-mechanism","kind":"phenomenon","literature_status":"contested","n":"1","parents":[],"plain":"The charge order could arise from electrons near special points of the band structure interacting with each other, or from coupling to lattice vibrations that soften.","posed_since":"2021","precise":"Determine whether the charge-density wave of AV3Sb5 is driven by electronic instabilities of the van Hove singularities at M (nesting and interactions) or by momentum-dependent electron-phonon coupling with a soft breathing phonon. An answer is inelastic x-ray measurements of phonon softening plus momentum-resolved electron-phonon coupling compared with the electronic susceptibility.","problem_ref":null,"references":"","settled_by":"Inelastic x-ray scattering of the phonon dispersion versus temperature combined with first-principles electron-phonon and electronic susceptibility calculations.","status_note":"","title":"Is the kagome charge-density wave electronic or phonon driven","topic_ref":"b07aceae6ac0e1690fea48db269288e8ac55a50f722f8f0e6cf26c1685ae1e5a"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"e6f28f9d8837a8468aca8b699e82afbfabb564fc042095dd6db20118d887639b","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"0671e7aa0cd2163fa3d32533d05ec04ad3bdd6ef85099ec0fb79aba9649fe00c","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"c6QLFmxUaGSxNgWu6HwRLgDcoXPNqYeUZukFRVme3bpX713BV4mjIcPT-WhZjzB8Xb0GFtOoQk4NP0_NkU6lBg"},"schema":"pubphys.envelope/1"},"record_hash":"e6f28f9d8837a8468aca8b699e82afbfabb564fc042095dd6db20118d887639b","leaf_index":1049}