{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:QXDIWN75Q6MGV7HPRRABIP72YB","short_pith_number":"pith:QXDIWN75","schema_version":"1.0","canonical_sha256":"85c68b37fd87986afcef8c40143ffac055ceeca92b1a9699a652b5e9992da9b0","source":{"kind":"arxiv","id":"2412.16730","version":2},"attestation_state":"computed","paper":{"title":"Interface-sensitive microwave loss in superconducting tantalum films sputtered on c-plane sapphire","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Akash V. Dixit, Anthony P. McFadden, Florent Lecocq, JinSu Oh, Lin Zhou, Raymond Simmonds, Stephen Gill, Trevyn F.Q. Larson","submitted_at":"2024-12-21T18:40:49Z","abstract_excerpt":"Quantum coherence in superconducting circuits has increased steadily over the last decades as a result of a growing understanding of the various loss mechanisms. Recently, tantalum (Ta) emerged as a promising material to address microscopic sources of loss found on niobium (Nb) or aluminum (Al) surfaces. However, the effects of film and interface microstructure on low-temperature microwave loss are still not well understood. Here we present a systematic study of the structural and electrical properties of Ta and Nb films sputtered on c-plane sapphire at varying growth temperatures. As growth t"},"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":"2412.16730","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-12-21T18:40:49Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e8af5a10d48b0ec24f98ab6a74550bd63b169d95bfe05e494233567a1fbf4a6e","abstract_canon_sha256":"ce1ecedff5dc30955dab4ce1f5b2e6513113f89e908d7112fa800002f339e59a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:19:50.613713Z","signature_b64":"V+VYE+kyldY8eCfQuQLL76t5/e8URd1hVhf6rslyjUv7C4Eqc4lp/6pJaadzZCpMDGMRro8lsoFtsb9+n9NXAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85c68b37fd87986afcef8c40143ffac055ceeca92b1a9699a652b5e9992da9b0","last_reissued_at":"2026-07-05T11:19:50.613227Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:19:50.613227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Interface-sensitive microwave loss in superconducting tantalum films sputtered on c-plane sapphire","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Akash V. Dixit, Anthony P. McFadden, Florent Lecocq, JinSu Oh, Lin Zhou, Raymond Simmonds, Stephen Gill, Trevyn F.Q. Larson","submitted_at":"2024-12-21T18:40:49Z","abstract_excerpt":"Quantum coherence in superconducting circuits has increased steadily over the last decades as a result of a growing understanding of the various loss mechanisms. Recently, tantalum (Ta) emerged as a promising material to address microscopic sources of loss found on niobium (Nb) or aluminum (Al) surfaces. However, the effects of film and interface microstructure on low-temperature microwave loss are still not well understood. Here we present a systematic study of the structural and electrical properties of Ta and Nb films sputtered on c-plane sapphire at varying growth temperatures. As growth t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.16730","kind":"arxiv","version":2},"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/2412.16730/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":"2412.16730","created_at":"2026-07-05T11:19:50.613283+00:00"},{"alias_kind":"arxiv_version","alias_value":"2412.16730v2","created_at":"2026-07-05T11:19:50.613283+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.16730","created_at":"2026-07-05T11:19:50.613283+00:00"},{"alias_kind":"pith_short_12","alias_value":"QXDIWN75Q6MG","created_at":"2026-07-05T11:19:50.613283+00:00"},{"alias_kind":"pith_short_16","alias_value":"QXDIWN75Q6MGV7HP","created_at":"2026-07-05T11:19:50.613283+00:00"},{"alias_kind":"pith_short_8","alias_value":"QXDIWN75","created_at":"2026-07-05T11:19:50.613283+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2510.05473","citing_title":"Cryogenic growth of aluminum: structural morphology, optical properties, superconductivity and microwave dielectric loss","ref_index":30,"is_internal_anchor":false},{"citing_arxiv_id":"2604.08813","citing_title":"Investigation of coherence of niobium-based resonators enabled by a fast-sealing microwave cavity","ref_index":14,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB","json":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB.json","graph_json":"https://pith.science/api/pith-number/QXDIWN75Q6MGV7HPRRABIP72YB/graph.json","events_json":"https://pith.science/api/pith-number/QXDIWN75Q6MGV7HPRRABIP72YB/events.json","paper":"https://pith.science/paper/QXDIWN75"},"agent_actions":{"view_html":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB","download_json":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB.json","view_paper":"https://pith.science/paper/QXDIWN75","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2412.16730&json=true","fetch_graph":"https://pith.science/api/pith-number/QXDIWN75Q6MGV7HPRRABIP72YB/graph.json","fetch_events":"https://pith.science/api/pith-number/QXDIWN75Q6MGV7HPRRABIP72YB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB/action/storage_attestation","attest_author":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB/action/author_attestation","sign_citation":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB/action/citation_signature","submit_replication":"https://pith.science/pith/QXDIWN75Q6MGV7HPRRABIP72YB/action/replication_record"}},"created_at":"2026-07-05T11:19:50.613283+00:00","updated_at":"2026-07-05T11:19:50.613283+00:00"}