{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:KPSLHNEMASA3VLEFUI4YLIWPJA","short_pith_number":"pith:KPSLHNEM","schema_version":"1.0","canonical_sha256":"53e4b3b48c0481baac85a23985a2cf48216e4981e5974dca72426cdf2a092b68","source":{"kind":"arxiv","id":"2603.26201","version":1},"attestation_state":"computed","paper":{"title":"The Unreconstructed {\\alpha}-Al$_{2}$O$_{3}$(0001) Surface is Inhomogeneous and Rough","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrea Conti, David Kugler, Florian Mittendorfer, Jan Balajka, Johanna I. H\\\"utner-Reisch, Michael Schmid, Ulrike Diebold","submitted_at":"2026-03-27T09:25:45Z","abstract_excerpt":"Alumina (Al$_{2}$O$_{3}$) is a key material for thin-film growth and heterogeneous catalysis, where the atomic surface structure critically impacts performance. Using noncontact atomic force microscopy (nc-AFM) combined with density functional theory (DFT) calculations, we challenge the common assumption that the unreconstructed $\\alpha$-Al$_{2}$O$_{3}$(0001) surface is atomically flat and uniformly Al-terminated. This widely accepted bulk termination satisfies polarity compensation requirements but results in highly undercoordinated surface Al cations at the surface. Despite substantial inwar"},"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":"2603.26201","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-03-27T09:25:45Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"9cf221a38473f696976d36a3dbd4b918828bc46ec802d6bc3ab6a8121532103e","abstract_canon_sha256":"5060565b09f43f15c7eae6774738a91b3962010dda10adf6cfe0abf15e1d4123"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-01T01:03:52.242845Z","signature_b64":"h/sY25E3zX7ZO04aJ7fGu3FivisP3LCJDl3w2pey8Rf+1kl9xJC4zb6nXRX1t5t7BXJecVDh1WhUyP2rhcaQAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53e4b3b48c0481baac85a23985a2cf48216e4981e5974dca72426cdf2a092b68","last_reissued_at":"2026-06-01T01:03:52.241764Z","signature_status":"signed_v1","first_computed_at":"2026-06-01T01:03:52.241764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Unreconstructed {\\alpha}-Al$_{2}$O$_{3}$(0001) Surface is Inhomogeneous and Rough","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrea Conti, David Kugler, Florian Mittendorfer, Jan Balajka, Johanna I. H\\\"utner-Reisch, Michael Schmid, Ulrike Diebold","submitted_at":"2026-03-27T09:25:45Z","abstract_excerpt":"Alumina (Al$_{2}$O$_{3}$) is a key material for thin-film growth and heterogeneous catalysis, where the atomic surface structure critically impacts performance. Using noncontact atomic force microscopy (nc-AFM) combined with density functional theory (DFT) calculations, we challenge the common assumption that the unreconstructed $\\alpha$-Al$_{2}$O$_{3}$(0001) surface is atomically flat and uniformly Al-terminated. This widely accepted bulk termination satisfies polarity compensation requirements but results in highly undercoordinated surface Al cations at the surface. Despite substantial inwar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.26201","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.26201/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2603.26201","created_at":"2026-06-01T01:03:52.241917+00:00"},{"alias_kind":"arxiv_version","alias_value":"2603.26201v1","created_at":"2026-06-01T01:03:52.241917+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.26201","created_at":"2026-06-01T01:03:52.241917+00:00"},{"alias_kind":"pith_short_12","alias_value":"KPSLHNEMASA3","created_at":"2026-06-01T01:03:52.241917+00:00"},{"alias_kind":"pith_short_16","alias_value":"KPSLHNEMASA3VLEF","created_at":"2026-06-01T01:03:52.241917+00:00"},{"alias_kind":"pith_short_8","alias_value":"KPSLHNEM","created_at":"2026-06-01T01:03:52.241917+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/KPSLHNEMASA3VLEFUI4YLIWPJA","json":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA.json","graph_json":"https://pith.science/api/pith-number/KPSLHNEMASA3VLEFUI4YLIWPJA/graph.json","events_json":"https://pith.science/api/pith-number/KPSLHNEMASA3VLEFUI4YLIWPJA/events.json","paper":"https://pith.science/paper/KPSLHNEM"},"agent_actions":{"view_html":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA","download_json":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA.json","view_paper":"https://pith.science/paper/KPSLHNEM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2603.26201&json=true","fetch_graph":"https://pith.science/api/pith-number/KPSLHNEMASA3VLEFUI4YLIWPJA/graph.json","fetch_events":"https://pith.science/api/pith-number/KPSLHNEMASA3VLEFUI4YLIWPJA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA/action/storage_attestation","attest_author":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA/action/author_attestation","sign_citation":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA/action/citation_signature","submit_replication":"https://pith.science/pith/KPSLHNEMASA3VLEFUI4YLIWPJA/action/replication_record"}},"created_at":"2026-06-01T01:03:52.241917+00:00","updated_at":"2026-06-01T01:03:52.241917+00:00"}