{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:X7RRIQP5GQT7YUA6M36STZNFKH","short_pith_number":"pith:X7RRIQP5","schema_version":"1.0","canonical_sha256":"bfe31441fd3427fc501e66fd29e5a551f29d34d0dd73baee47e647aa48d84a6a","source":{"kind":"arxiv","id":"1904.01811","version":1},"attestation_state":"computed","paper":{"title":"Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bing Xu, Congcong Le, Jiangping Hu, Run Yang, Xianggang Qiu, Yaomin Dai, Zhiyu Liao, Ziyang Qiu","submitted_at":"2019-04-03T07:37:26Z","abstract_excerpt":"The optical properties of YbMnSb2 have been measured in a broad frequency range from room temperature down to 7 K. With decreasing temperature, a flat region develops in the optical conductivity spectra at about 300cm-1, which can not be described by the well-known Drude-Lorentz model. A frequency-independent component has to be introduced to model the measured optical conductivity. Our first-principles calculations show that YbMnSb2 possesses a Dirac nodal line near the Fermi level. A comparison between the measured optical properties and calculated electronic band structures suggests that th"},"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":"1904.01811","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-03T07:37:26Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"0e032cc08384a316fe467dd09c7172b2c3974317d31564e2f25c5c36e9cf799e","abstract_canon_sha256":"91e267de44183df720b21195cbb9280760da81995b5c66d6a0634730cb40cc3c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:06:39.375494Z","signature_b64":"DipetF/P+FJ4snZTy2MT0zUmDVsublBOLaPkW6qQV6VR1+ia445tf+ejFM7S7NAyixQo2hcoWMFfG5g9v3d6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bfe31441fd3427fc501e66fd29e5a551f29d34d0dd73baee47e647aa48d84a6a","last_reissued_at":"2026-07-05T00:06:39.375013Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:06:39.375013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bing Xu, Congcong Le, Jiangping Hu, Run Yang, Xianggang Qiu, Yaomin Dai, Zhiyu Liao, Ziyang Qiu","submitted_at":"2019-04-03T07:37:26Z","abstract_excerpt":"The optical properties of YbMnSb2 have been measured in a broad frequency range from room temperature down to 7 K. With decreasing temperature, a flat region develops in the optical conductivity spectra at about 300cm-1, which can not be described by the well-known Drude-Lorentz model. A frequency-independent component has to be introduced to model the measured optical conductivity. Our first-principles calculations show that YbMnSb2 possesses a Dirac nodal line near the Fermi level. A comparison between the measured optical properties and calculated electronic band structures suggests that th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01811","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/1904.01811/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":"1904.01811","created_at":"2026-07-05T00:06:39.375076+00:00"},{"alias_kind":"arxiv_version","alias_value":"1904.01811v1","created_at":"2026-07-05T00:06:39.375076+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01811","created_at":"2026-07-05T00:06:39.375076+00:00"},{"alias_kind":"pith_short_12","alias_value":"X7RRIQP5GQT7","created_at":"2026-07-05T00:06:39.375076+00:00"},{"alias_kind":"pith_short_16","alias_value":"X7RRIQP5GQT7YUA6","created_at":"2026-07-05T00:06:39.375076+00:00"},{"alias_kind":"pith_short_8","alias_value":"X7RRIQP5","created_at":"2026-07-05T00:06:39.375076+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1908.06910","citing_title":"Disorder driven multifractality transition in Weyl nodal loops","ref_index":18,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH","json":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH.json","graph_json":"https://pith.science/api/pith-number/X7RRIQP5GQT7YUA6M36STZNFKH/graph.json","events_json":"https://pith.science/api/pith-number/X7RRIQP5GQT7YUA6M36STZNFKH/events.json","paper":"https://pith.science/paper/X7RRIQP5"},"agent_actions":{"view_html":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH","download_json":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH.json","view_paper":"https://pith.science/paper/X7RRIQP5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1904.01811&json=true","fetch_graph":"https://pith.science/api/pith-number/X7RRIQP5GQT7YUA6M36STZNFKH/graph.json","fetch_events":"https://pith.science/api/pith-number/X7RRIQP5GQT7YUA6M36STZNFKH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH/action/storage_attestation","attest_author":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH/action/author_attestation","sign_citation":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH/action/citation_signature","submit_replication":"https://pith.science/pith/X7RRIQP5GQT7YUA6M36STZNFKH/action/replication_record"}},"created_at":"2026-07-05T00:06:39.375076+00:00","updated_at":"2026-07-05T00:06:39.375076+00:00"}