{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DA77AL7S4BG6WQAJXL2YLARWWJ","short_pith_number":"pith:DA77AL7S","schema_version":"1.0","canonical_sha256":"183ff02ff2e04deb4009baf5858236b26eacb71e7b94c3f4f8a3d571264c2f5c","source":{"kind":"arxiv","id":"1807.01434","version":4},"attestation_state":"computed","paper":{"title":"Predicting Dirac semimetals based on Sodium Ternary Compounds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bo Peng, Changming Yue, Hao Zhang, Hongming Weng, Zhong Fang","submitted_at":"2018-07-04T02:57:54Z","abstract_excerpt":"Predicting a new Dirac semimetal (DSM), as well as other topological materials, is quite challenging, since the relationship between crystal structure, composing atoms and the band topology is complex and elusive. Here, we demonstrate an approach to design DSMs via exploring the chemical degree of freedom. Based on the understanding of the well-known DSM Na$_3$Bi, three compounds in one family, namely Na$_2$MgSn, Na$_2$MgPb and Na$_2$CdSn, have been exactly located. Further hybrid-functional calculations with improved estimation of band inversion show that two of them, Na$_2$MgPb and Na$_2$CdS"},"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":"1807.01434","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-04T02:57:54Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"3eb65f8deb01db84f089cecdf30a34ee1f086c91b9f25bb52bdb9d9330099145","abstract_canon_sha256":"fd7cce24f06bc5b9229a565a02b3a43ae2acbe63f8ca1712d52bbe6320914018"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:24.338944Z","signature_b64":"bVdagoUaxxnYW5vUazlMYkyhIkdiETJlwoO5vQyQ5UFcOCAqWTcHNuMFVTa3RzxDCLNI+uWa0vzpQL4L5IaYDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"183ff02ff2e04deb4009baf5858236b26eacb71e7b94c3f4f8a3d571264c2f5c","last_reissued_at":"2026-05-17T23:52:24.338490Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:24.338490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Predicting Dirac semimetals based on Sodium Ternary Compounds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bo Peng, Changming Yue, Hao Zhang, Hongming Weng, Zhong Fang","submitted_at":"2018-07-04T02:57:54Z","abstract_excerpt":"Predicting a new Dirac semimetal (DSM), as well as other topological materials, is quite challenging, since the relationship between crystal structure, composing atoms and the band topology is complex and elusive. Here, we demonstrate an approach to design DSMs via exploring the chemical degree of freedom. Based on the understanding of the well-known DSM Na$_3$Bi, three compounds in one family, namely Na$_2$MgSn, Na$_2$MgPb and Na$_2$CdSn, have been exactly located. Further hybrid-functional calculations with improved estimation of band inversion show that two of them, Na$_2$MgPb and Na$_2$CdS"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01434","kind":"arxiv","version":4},"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":"1807.01434","created_at":"2026-05-17T23:52:24.338553+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.01434v4","created_at":"2026-05-17T23:52:24.338553+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01434","created_at":"2026-05-17T23:52:24.338553+00:00"},{"alias_kind":"pith_short_12","alias_value":"DA77AL7S4BG6","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DA77AL7S4BG6WQAJ","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DA77AL7S","created_at":"2026-05-18T12:32:19.392346+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2603.23001","citing_title":"Exploring Spectral Singularities in Dirac Semimetals: The Role of Non-Hermitian Physics and Dichroism","ref_index":100,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ","json":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ.json","graph_json":"https://pith.science/api/pith-number/DA77AL7S4BG6WQAJXL2YLARWWJ/graph.json","events_json":"https://pith.science/api/pith-number/DA77AL7S4BG6WQAJXL2YLARWWJ/events.json","paper":"https://pith.science/paper/DA77AL7S"},"agent_actions":{"view_html":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ","download_json":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ.json","view_paper":"https://pith.science/paper/DA77AL7S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.01434&json=true","fetch_graph":"https://pith.science/api/pith-number/DA77AL7S4BG6WQAJXL2YLARWWJ/graph.json","fetch_events":"https://pith.science/api/pith-number/DA77AL7S4BG6WQAJXL2YLARWWJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ/action/storage_attestation","attest_author":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ/action/author_attestation","sign_citation":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ/action/citation_signature","submit_replication":"https://pith.science/pith/DA77AL7S4BG6WQAJXL2YLARWWJ/action/replication_record"}},"created_at":"2026-05-17T23:52:24.338553+00:00","updated_at":"2026-05-17T23:52:24.338553+00:00"}