{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZWLBHAVUSXFMAHZ2WJPQ6UFAL2","short_pith_number":"pith:ZWLBHAVU","canonical_record":{"source":{"id":"2001.00866","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-03T15:50:52Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"5c82061763b89399951e8896e47473b99720e35dedd2f46d42544f09453e6ec5","abstract_canon_sha256":"9c8eae872d67337a5617a03b4e916df9cb3213a22f5d53a771f8880a0d70274c"},"schema_version":"1.0"},"canonical_sha256":"cd961382b495cac01f3ab25f0f50a05eb72b1556c19a4d5c79f1ad6a52723316","source":{"kind":"arxiv","id":"2001.00866","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.00866","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"2001.00866v1","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.00866","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZWLBHAVUSXFM","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_16","alias_value":"ZWLBHAVUSXFMAHZ2","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_8","alias_value":"ZWLBHAVU","created_at":"2026-07-05T01:46:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZWLBHAVUSXFMAHZ2WJPQ6UFAL2","target":"record","payload":{"canonical_record":{"source":{"id":"2001.00866","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-03T15:50:52Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"5c82061763b89399951e8896e47473b99720e35dedd2f46d42544f09453e6ec5","abstract_canon_sha256":"9c8eae872d67337a5617a03b4e916df9cb3213a22f5d53a771f8880a0d70274c"},"schema_version":"1.0"},"canonical_sha256":"cd961382b495cac01f3ab25f0f50a05eb72b1556c19a4d5c79f1ad6a52723316","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:46:46.252961Z","signature_b64":"FsonbGNa/Ypv3AuDimcX/l5SXmvuPXSBzwf3s3VFQqBFl0ils50Ahh02OES/WMAq6C+Tzk2CxmtwhL/azIgEBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd961382b495cac01f3ab25f0f50a05eb72b1556c19a4d5c79f1ad6a52723316","last_reissued_at":"2026-07-05T01:46:46.252577Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:46:46.252577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.00866","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hypfzfd2Nspx6PrPn73iLHFthCKBoTvd5wtJQTCpkuxgFXUQKrjAC0c3/qsHv+KK+WQ/vjW/xXt/QmvWOu0VAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T22:36:40.771663Z"},"content_sha256":"0edf5d28cdeb74f9dcbec1717e160bcbec11f5983c46f37382e0f172531ac2ae","schema_version":"1.0","event_id":"sha256:0edf5d28cdeb74f9dcbec1717e160bcbec11f5983c46f37382e0f172531ac2ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZWLBHAVUSXFMAHZ2WJPQ6UFAL2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping the Dirac fermions in intrinsic antiferromagnetic topological insulators (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)$_n$ (n=0, 1)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"J. -F. He, J.-J. Ying, Mengzhu Shi, Qiang Zhang, Simin Nie, Tao Wu, X. -H. Chen, Zhenyu Wang, Zhijun Wang, Zuowei Liang","submitted_at":"2020-01-03T15:50:52Z","abstract_excerpt":"Topological surface states with intrinsic magnetic ordering in the MnBi$_2$Te$_4$(Bi$_2$Te$_3$)$_n$ compounds have been predicted to host rich topological phenomena including quantized anomalous Hall effect and axion insulator state. Here we use scanning tunneling microscopy to image the surface Dirac fermions in MnBi$_2$Te$_4$ and MnBi$_4$Te$_7$. We have determined the energy dispersion and helical spin texture of the surface states through quasiparticle interference patterns far above Dirac energy, which confirms its topological nature. Approaching the Dirac point, the native defects in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.00866","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/2001.00866/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yvft1TQh208/GC/xnga+0PrtD0dNe1K9SFToNlhlLHBlUeFjn/NaXdG2qb0qlbjIZ8tTJa/lNMLvGhOMLvgtDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T22:36:40.772215Z"},"content_sha256":"bacddb4f8d0488caa01ebcd730fc455c35787eeabac3280711f36cec0a59f32e","schema_version":"1.0","event_id":"sha256:bacddb4f8d0488caa01ebcd730fc455c35787eeabac3280711f36cec0a59f32e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/bundle.json","state_url":"https://pith.science/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/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":"2026-07-31T22:36:40Z","links":{"resolver":"https://pith.science/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2","bundle":"https://pith.science/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/bundle.json","state":"https://pith.science/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZWLBHAVUSXFMAHZ2WJPQ6UFAL2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZWLBHAVUSXFMAHZ2WJPQ6UFAL2","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":"9c8eae872d67337a5617a03b4e916df9cb3213a22f5d53a771f8880a0d70274c","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-03T15:50:52Z","title_canon_sha256":"5c82061763b89399951e8896e47473b99720e35dedd2f46d42544f09453e6ec5"},"schema_version":"1.0","source":{"id":"2001.00866","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.00866","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"2001.00866v1","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.00866","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZWLBHAVUSXFM","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_16","alias_value":"ZWLBHAVUSXFMAHZ2","created_at":"2026-07-05T01:46:46Z"},{"alias_kind":"pith_short_8","alias_value":"ZWLBHAVU","created_at":"2026-07-05T01:46:46Z"}],"graph_snapshots":[{"event_id":"sha256:bacddb4f8d0488caa01ebcd730fc455c35787eeabac3280711f36cec0a59f32e","target":"graph","created_at":"2026-07-05T01:46:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2001.00866/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Topological surface states with intrinsic magnetic ordering in the MnBi$_2$Te$_4$(Bi$_2$Te$_3$)$_n$ compounds have been predicted to host rich topological phenomena including quantized anomalous Hall effect and axion insulator state. Here we use scanning tunneling microscopy to image the surface Dirac fermions in MnBi$_2$Te$_4$ and MnBi$_4$Te$_7$. We have determined the energy dispersion and helical spin texture of the surface states through quasiparticle interference patterns far above Dirac energy, which confirms its topological nature. Approaching the Dirac point, the native defects in the ","authors_text":"J. -F. He, J.-J. Ying, Mengzhu Shi, Qiang Zhang, Simin Nie, Tao Wu, X. -H. Chen, Zhenyu Wang, Zhijun Wang, Zuowei Liang","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-03T15:50:52Z","title":"Mapping the Dirac fermions in intrinsic antiferromagnetic topological insulators (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)$_n$ (n=0, 1)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.00866","kind":"arxiv","version":1},"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":"sha256:0edf5d28cdeb74f9dcbec1717e160bcbec11f5983c46f37382e0f172531ac2ae","target":"record","created_at":"2026-07-05T01:46:46Z","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":"9c8eae872d67337a5617a03b4e916df9cb3213a22f5d53a771f8880a0d70274c","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-01-03T15:50:52Z","title_canon_sha256":"5c82061763b89399951e8896e47473b99720e35dedd2f46d42544f09453e6ec5"},"schema_version":"1.0","source":{"id":"2001.00866","kind":"arxiv","version":1}},"canonical_sha256":"cd961382b495cac01f3ab25f0f50a05eb72b1556c19a4d5c79f1ad6a52723316","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd961382b495cac01f3ab25f0f50a05eb72b1556c19a4d5c79f1ad6a52723316","first_computed_at":"2026-07-05T01:46:46.252577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:46:46.252577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FsonbGNa/Ypv3AuDimcX/l5SXmvuPXSBzwf3s3VFQqBFl0ils50Ahh02OES/WMAq6C+Tzk2CxmtwhL/azIgEBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:46:46.252961Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.00866","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0edf5d28cdeb74f9dcbec1717e160bcbec11f5983c46f37382e0f172531ac2ae","sha256:bacddb4f8d0488caa01ebcd730fc455c35787eeabac3280711f36cec0a59f32e"],"state_sha256":"c602b797043793ba15f718f0f26eaa96b0aa8278c229e9ca21e08f47b3527646"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MyKNRAuOnnPpPsMZNpDb9P2DRjtN6y9ESaHBNm/slAVEdnJIhsmfq1CpnO4CBHSiwFuZ6wgpi8PJj/Uh5WMaDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T22:36:40.776365Z","bundle_sha256":"e204bcbf3e8e94a94a174602c53da73ee23dd41a8f4460b1e9f0a751b1f0575e"}}