{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:Y4I23YWWRKNSKMUADMPFKPQAGE","short_pith_number":"pith:Y4I23YWW","schema_version":"1.0","canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","source":{"kind":"arxiv","id":"1106.2643","version":1},"attestation_state":"computed","paper":{"title":"Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Q. R. Baron, H. Khosroabadi, H. Uchiyama, J. Kobayashi, K. Tanaka, S. Miyasaka, S. Tajima","submitted_at":"2011-06-14T09:06:47Z","abstract_excerpt":"The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \\Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1106.2643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","cross_cats_sorted":[],"title_canon_sha256":"1347320fb9c023766069d7e7943aec8bb4fafd99b581bd83bef1a7df587a30c3","abstract_canon_sha256":"7d4efaa9a6ca6c38eb9cc90fe8ecb141313ebacd203ef919df7b3a328dde0b54"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:37.586451Z","signature_b64":"3fUbQBieUiq3XkGrILdYQookkIfkJlAtS2r+kS27peua4JY3xhnaznwYUjao+zrRzsD5HeJxjfWu2LbswfMfDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","last_reissued_at":"2026-05-18T02:01:37.585894Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:37.585894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Q. R. Baron, H. Khosroabadi, H. Uchiyama, J. Kobayashi, K. Tanaka, S. Miyasaka, S. Tajima","submitted_at":"2011-06-14T09:06:47Z","abstract_excerpt":"The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \\Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2643","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1106.2643","created_at":"2026-05-18T02:01:37.585974+00:00"},{"alias_kind":"arxiv_version","alias_value":"1106.2643v1","created_at":"2026-05-18T02:01:37.585974+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2643","created_at":"2026-05-18T02:01:37.585974+00:00"},{"alias_kind":"pith_short_12","alias_value":"Y4I23YWWRKNS","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_16","alias_value":"Y4I23YWWRKNSKMUA","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_8","alias_value":"Y4I23YWW","created_at":"2026-05-18T12:26:47.523578+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE","json":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE.json","graph_json":"https://pith.science/api/pith-number/Y4I23YWWRKNSKMUADMPFKPQAGE/graph.json","events_json":"https://pith.science/api/pith-number/Y4I23YWWRKNSKMUADMPFKPQAGE/events.json","paper":"https://pith.science/paper/Y4I23YWW"},"agent_actions":{"view_html":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE","download_json":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE.json","view_paper":"https://pith.science/paper/Y4I23YWW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1106.2643&json=true","fetch_graph":"https://pith.science/api/pith-number/Y4I23YWWRKNSKMUADMPFKPQAGE/graph.json","fetch_events":"https://pith.science/api/pith-number/Y4I23YWWRKNSKMUADMPFKPQAGE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/action/storage_attestation","attest_author":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/action/author_attestation","sign_citation":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/action/citation_signature","submit_replication":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/action/replication_record"}},"created_at":"2026-05-18T02:01:37.585974+00:00","updated_at":"2026-05-18T02:01:37.585974+00:00"}