{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:UXH6OXK324ZBZZP6VL3MFEIPOQ","short_pith_number":"pith:UXH6OXK3","schema_version":"1.0","canonical_sha256":"a5cfe75d5bd7321ce5feaaf6c2910f742df0db73af30b67671f6f32f143b4e16","source":{"kind":"arxiv","id":"1708.08570","version":1},"attestation_state":"computed","paper":{"title":"Absence of superconductivity in NbB","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. J. S. Machado, F. Abud, I. R. Souza, L. E. Correa, M. S. Torikachvili, R.F. Jardim","submitted_at":"2017-08-29T01:58:56Z","abstract_excerpt":"A systematic study of the superconducting properties in a series of arc-melted Nb-B samples close to the 1:1 composition was carried out. Powder X-ray diffraction (XRD) shows that all samples are both non-stoichiometric, and comprising of two crystal phases: a majority orthorhombic NbB-type phase, and traces of a minor body-centered cubic Nb-rich phase Nb$_{ss}$ with stoichiometry close to Nb$_{0.98}$B$_{0.02}$. The emergence of superconductivity near T$_c \\sim$ 9.0 K was inferred from magnetization data in chunk and powder samples. However, the very small superconducting volume fractions are "},"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":"1708.08570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-08-29T01:58:56Z","cross_cats_sorted":[],"title_canon_sha256":"b3064e1aab492f20ae656009972dcbf0d50c8e852fbab1043a859722f6021fda","abstract_canon_sha256":"beb220511b52ab8ef0fb3372b21390fc79ed00addcda7f1126660b2202689e50"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:27.407596Z","signature_b64":"Q+5rkGInPhwCYAPdsAx8CUMP277Vbfew/77uxXue3T7Wn4v62h26ScTpb7fkONn7PnwvMg5uBo3yNMvpA6vXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5cfe75d5bd7321ce5feaaf6c2910f742df0db73af30b67671f6f32f143b4e16","last_reissued_at":"2026-05-18T00:36:27.406870Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:27.406870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Absence of superconductivity in NbB","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. J. S. Machado, F. Abud, I. R. Souza, L. E. Correa, M. S. Torikachvili, R.F. Jardim","submitted_at":"2017-08-29T01:58:56Z","abstract_excerpt":"A systematic study of the superconducting properties in a series of arc-melted Nb-B samples close to the 1:1 composition was carried out. Powder X-ray diffraction (XRD) shows that all samples are both non-stoichiometric, and comprising of two crystal phases: a majority orthorhombic NbB-type phase, and traces of a minor body-centered cubic Nb-rich phase Nb$_{ss}$ with stoichiometry close to Nb$_{0.98}$B$_{0.02}$. The emergence of superconductivity near T$_c \\sim$ 9.0 K was inferred from magnetization data in chunk and powder samples. However, the very small superconducting volume fractions are "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.08570","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":"1708.08570","created_at":"2026-05-18T00:36:27.406984+00:00"},{"alias_kind":"arxiv_version","alias_value":"1708.08570v1","created_at":"2026-05-18T00:36:27.406984+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.08570","created_at":"2026-05-18T00:36:27.406984+00:00"},{"alias_kind":"pith_short_12","alias_value":"UXH6OXK324ZB","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_16","alias_value":"UXH6OXK324ZBZZP6","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_8","alias_value":"UXH6OXK3","created_at":"2026-05-18T12:31:49.984773+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/UXH6OXK324ZBZZP6VL3MFEIPOQ","json":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ.json","graph_json":"https://pith.science/api/pith-number/UXH6OXK324ZBZZP6VL3MFEIPOQ/graph.json","events_json":"https://pith.science/api/pith-number/UXH6OXK324ZBZZP6VL3MFEIPOQ/events.json","paper":"https://pith.science/paper/UXH6OXK3"},"agent_actions":{"view_html":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ","download_json":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ.json","view_paper":"https://pith.science/paper/UXH6OXK3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1708.08570&json=true","fetch_graph":"https://pith.science/api/pith-number/UXH6OXK324ZBZZP6VL3MFEIPOQ/graph.json","fetch_events":"https://pith.science/api/pith-number/UXH6OXK324ZBZZP6VL3MFEIPOQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ/action/storage_attestation","attest_author":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ/action/author_attestation","sign_citation":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ/action/citation_signature","submit_replication":"https://pith.science/pith/UXH6OXK324ZBZZP6VL3MFEIPOQ/action/replication_record"}},"created_at":"2026-05-18T00:36:27.406984+00:00","updated_at":"2026-05-18T00:36:27.406984+00:00"}