{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OMRRXCIXLJPMMS2FRA6XRZ4YO7","short_pith_number":"pith:OMRRXCIX","canonical_record":{"source":{"id":"1202.5636","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-02-25T09:58:40Z","cross_cats_sorted":[],"title_canon_sha256":"676de6b021d77611e6cf1f2ffd5719177fe4996d0e7653bf734642550fd4a796","abstract_canon_sha256":"88aede588d6e1cbfa9f01fdbdd12dd0aeb05b7349f0dab274b89baa5db424551"},"schema_version":"1.0"},"canonical_sha256":"73231b89175a5ec64b45883d78e79877fcc5d872a6c556314a9caa29d7dd93ff","source":{"kind":"arxiv","id":"1202.5636","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.5636","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1202.5636v2","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.5636","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"OMRRXCIXLJPM","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OMRRXCIXLJPMMS2F","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OMRRXCIX","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OMRRXCIXLJPMMS2FRA6XRZ4YO7","target":"record","payload":{"canonical_record":{"source":{"id":"1202.5636","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-02-25T09:58:40Z","cross_cats_sorted":[],"title_canon_sha256":"676de6b021d77611e6cf1f2ffd5719177fe4996d0e7653bf734642550fd4a796","abstract_canon_sha256":"88aede588d6e1cbfa9f01fdbdd12dd0aeb05b7349f0dab274b89baa5db424551"},"schema_version":"1.0"},"canonical_sha256":"73231b89175a5ec64b45883d78e79877fcc5d872a6c556314a9caa29d7dd93ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:01.498847Z","signature_b64":"EDy0xgnFQYzs/6eYcI6nt+kNgMyAbyDEbA43b58OwraWzRqdFOzkSdkeOgcr1YVQoOM1tmUaiG9u2WBf1IlKCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"73231b89175a5ec64b45883d78e79877fcc5d872a6c556314a9caa29d7dd93ff","last_reissued_at":"2026-05-18T03:55:01.498214Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:01.498214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.5636","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CeRevJo84JmuZ8RrWUjtZxJU3wID3h03JG7qc1RVtd+ksVT/4dz9b1fRezf3YY4maeplRVw1Fo2SiYQ2bOoqAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:00:38.642239Z"},"content_sha256":"9ddcf4b08df59726d411f39eb5bcf8c53f747632e2609b705d52153dcce92313","schema_version":"1.0","event_id":"sha256:9ddcf4b08df59726d411f39eb5bcf8c53f747632e2609b705d52153dcce92313"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OMRRXCIXLJPMMS2FRA6XRZ4YO7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Cesare Franchini, Gang Xu, Hongming Weng, Xi Dai, Xingqiu Chen, Yan Sun, Zhijun Wang, Zhong Fang","submitted_at":"2012-02-25T09:58:40Z","abstract_excerpt":"The three-dimensional (3D) Dirac point, where two Weyl points overlap in momentum space, is usually unstable and hard to realize. Here we show, based on the first-principles calculations and effective model analysis, that crystalline $A_3$Bi ($A$=Na, K, Rb) are Dirac semimetals with bulk 3D Dirac points protected by crystal symmetry. They possess non-trivial Fermi arcs on the surfaces, and can be driven into various topologically distinct phases by explicit breaking of symmetries. Giant diamagnetism, linear quantum magnetoresistance, and quantum spin-Hall effect will be expected for such compo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.5636","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1yeCS/uP9dfEIkmlYQRRJ19SB7EimohnSB1a3JIJgq83aagDosmBZHuDfpogQn01tX4I1PlpB2prorO81DxQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:00:38.642968Z"},"content_sha256":"efb2e7232139ce104a9a4b3f88912e84967289dab38631b0a8de555fc9014826","schema_version":"1.0","event_id":"sha256:efb2e7232139ce104a9a4b3f88912e84967289dab38631b0a8de555fc9014826"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/bundle.json","state_url":"https://pith.science/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T18:00:38Z","links":{"resolver":"https://pith.science/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7","bundle":"https://pith.science/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/bundle.json","state":"https://pith.science/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OMRRXCIXLJPMMS2FRA6XRZ4YO7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OMRRXCIXLJPMMS2FRA6XRZ4YO7","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"88aede588d6e1cbfa9f01fdbdd12dd0aeb05b7349f0dab274b89baa5db424551","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-02-25T09:58:40Z","title_canon_sha256":"676de6b021d77611e6cf1f2ffd5719177fe4996d0e7653bf734642550fd4a796"},"schema_version":"1.0","source":{"id":"1202.5636","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.5636","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1202.5636v2","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.5636","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"OMRRXCIXLJPM","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OMRRXCIXLJPMMS2F","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OMRRXCIX","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:efb2e7232139ce104a9a4b3f88912e84967289dab38631b0a8de555fc9014826","target":"graph","created_at":"2026-05-18T03:55:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The three-dimensional (3D) Dirac point, where two Weyl points overlap in momentum space, is usually unstable and hard to realize. Here we show, based on the first-principles calculations and effective model analysis, that crystalline $A_3$Bi ($A$=Na, K, Rb) are Dirac semimetals with bulk 3D Dirac points protected by crystal symmetry. They possess non-trivial Fermi arcs on the surfaces, and can be driven into various topologically distinct phases by explicit breaking of symmetries. Giant diamagnetism, linear quantum magnetoresistance, and quantum spin-Hall effect will be expected for such compo","authors_text":"Cesare Franchini, Gang Xu, Hongming Weng, Xi Dai, Xingqiu Chen, Yan Sun, Zhijun Wang, Zhong Fang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-02-25T09:58:40Z","title":"Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.5636","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9ddcf4b08df59726d411f39eb5bcf8c53f747632e2609b705d52153dcce92313","target":"record","created_at":"2026-05-18T03:55:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"88aede588d6e1cbfa9f01fdbdd12dd0aeb05b7349f0dab274b89baa5db424551","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-02-25T09:58:40Z","title_canon_sha256":"676de6b021d77611e6cf1f2ffd5719177fe4996d0e7653bf734642550fd4a796"},"schema_version":"1.0","source":{"id":"1202.5636","kind":"arxiv","version":2}},"canonical_sha256":"73231b89175a5ec64b45883d78e79877fcc5d872a6c556314a9caa29d7dd93ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73231b89175a5ec64b45883d78e79877fcc5d872a6c556314a9caa29d7dd93ff","first_computed_at":"2026-05-18T03:55:01.498214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:01.498214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EDy0xgnFQYzs/6eYcI6nt+kNgMyAbyDEbA43b58OwraWzRqdFOzkSdkeOgcr1YVQoOM1tmUaiG9u2WBf1IlKCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:01.498847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.5636","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ddcf4b08df59726d411f39eb5bcf8c53f747632e2609b705d52153dcce92313","sha256:efb2e7232139ce104a9a4b3f88912e84967289dab38631b0a8de555fc9014826"],"state_sha256":"08620082cdd93f8480d9d10de6faa59f24423991f10d98a1e81c609f3fa06512"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F2Es41fxJeatRD0pH1q3LLWrrTC0El7V4lwllTE+/v/nQRgmUIsrnQLB/QsThYXBi7SzfLH/4DxV2hq8X1NCDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:00:38.646518Z","bundle_sha256":"adaf122c4bc9defe66535bacd26aae620133581055e5dcd8e7c3ed2e71b41750"}}