{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:N55CSIDSZBSTZNLQS3XVNSQ4SF","short_pith_number":"pith:N55CSIDS","canonical_record":{"source":{"id":"1903.07787","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-19T01:32:52Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"9466d475c4fb973cc3c3dc9a2cc7fcc0ee2dcfe6dc8441b97458bfcca1c6adb2","abstract_canon_sha256":"d18ba4884bbcc510eef4921e123364e53128c50f9231b5c357ffb0783ed848c0"},"schema_version":"1.0"},"canonical_sha256":"6f7a292072c8653cb57096ef56ca1c915789f622ca36c5557cba0cd1a2c2801e","source":{"kind":"arxiv","id":"1903.07787","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07787","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07787v3","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07787","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"N55CSIDSZBST","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"N55CSIDSZBSTZNLQ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"N55CSIDS","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:N55CSIDSZBSTZNLQS3XVNSQ4SF","target":"record","payload":{"canonical_record":{"source":{"id":"1903.07787","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-19T01:32:52Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"9466d475c4fb973cc3c3dc9a2cc7fcc0ee2dcfe6dc8441b97458bfcca1c6adb2","abstract_canon_sha256":"d18ba4884bbcc510eef4921e123364e53128c50f9231b5c357ffb0783ed848c0"},"schema_version":"1.0"},"canonical_sha256":"6f7a292072c8653cb57096ef56ca1c915789f622ca36c5557cba0cd1a2c2801e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:02.909908Z","signature_b64":"vtbA6hpyuO/KmA/dKq42SAcJD7uQ0I1/wTvy30k8kkkbggVmtDZRBQj3rOj2IGjNFv4kzOUOvp5ZmUUZgJvcCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6f7a292072c8653cb57096ef56ca1c915789f622ca36c5557cba0cd1a2c2801e","last_reissued_at":"2026-05-17T23:43:02.909440Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:02.909440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.07787","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TNxKQK/Eeg6j8lDSR94js1Psx9qtymXDbF1DLObUZielyftITlibXpW9othZuXClgnYhWKz5LdqyiUsoWv47AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T23:17:54.996580Z"},"content_sha256":"e33c30275a85785255836951a9406eceee64985b5c9ae45ca92ee2609fed5212","schema_version":"1.0","event_id":"sha256:e33c30275a85785255836951a9406eceee64985b5c9ae45ca92ee2609fed5212"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:N55CSIDSZBSTZNLQS3XVNSQ4SF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Physical origin of giant excitonic and magneto-optical responses in two-dimensional ferromagnetic insulators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Meng Wu, Steven G. Louie, Ting Cao, Zhenglu Li","submitted_at":"2019-03-19T01:32:52Z","abstract_excerpt":"The recent discovery of magnetism in atomically thin layers of van der Waals crystals has created great opportunities for exploring light-matter interactions and magneto-optical phenomena in the two-dimensional limit. Optical and magneto-optical experiments have provided insights into these topics, revealing strong magnetic circular dichroism and giant Kerr signals in atomically thin ferromagnetic insulators. However, the nature of the giant magneto-optical responses and their microscopic mechanism remain unclear. Here, by performing first-principles GW and Bethe-Salpeter equation calculations"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07787","kind":"arxiv","version":3},"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":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ouiwuK07K0HXMFP1bHaqvLzfmuGl8cLdclYtwSBD7V0dOU579yMgIEF0tNNGQCewFnkDKAw9iBNxuUAMgCtAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T23:17:54.996932Z"},"content_sha256":"1820da0061649ae5b7ed5c5f724d9eec0d041767eef6df9788c3d55aa3353a17","schema_version":"1.0","event_id":"sha256:1820da0061649ae5b7ed5c5f724d9eec0d041767eef6df9788c3d55aa3353a17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/bundle.json","state_url":"https://pith.science/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/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":"2026-06-22T23:17:54Z","links":{"resolver":"https://pith.science/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF","bundle":"https://pith.science/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/bundle.json","state":"https://pith.science/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N55CSIDSZBSTZNLQS3XVNSQ4SF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:N55CSIDSZBSTZNLQS3XVNSQ4SF","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":"d18ba4884bbcc510eef4921e123364e53128c50f9231b5c357ffb0783ed848c0","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-19T01:32:52Z","title_canon_sha256":"9466d475c4fb973cc3c3dc9a2cc7fcc0ee2dcfe6dc8441b97458bfcca1c6adb2"},"schema_version":"1.0","source":{"id":"1903.07787","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07787","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07787v3","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07787","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"N55CSIDSZBST","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"N55CSIDSZBSTZNLQ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"N55CSIDS","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:1820da0061649ae5b7ed5c5f724d9eec0d041767eef6df9788c3d55aa3353a17","target":"graph","created_at":"2026-05-17T23:43:02Z","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 recent discovery of magnetism in atomically thin layers of van der Waals crystals has created great opportunities for exploring light-matter interactions and magneto-optical phenomena in the two-dimensional limit. Optical and magneto-optical experiments have provided insights into these topics, revealing strong magnetic circular dichroism and giant Kerr signals in atomically thin ferromagnetic insulators. However, the nature of the giant magneto-optical responses and their microscopic mechanism remain unclear. Here, by performing first-principles GW and Bethe-Salpeter equation calculations","authors_text":"Meng Wu, Steven G. Louie, Ting Cao, Zhenglu Li","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-19T01:32:52Z","title":"Physical origin of giant excitonic and magneto-optical responses in two-dimensional ferromagnetic insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07787","kind":"arxiv","version":3},"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:e33c30275a85785255836951a9406eceee64985b5c9ae45ca92ee2609fed5212","target":"record","created_at":"2026-05-17T23:43:02Z","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":"d18ba4884bbcc510eef4921e123364e53128c50f9231b5c357ffb0783ed848c0","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-19T01:32:52Z","title_canon_sha256":"9466d475c4fb973cc3c3dc9a2cc7fcc0ee2dcfe6dc8441b97458bfcca1c6adb2"},"schema_version":"1.0","source":{"id":"1903.07787","kind":"arxiv","version":3}},"canonical_sha256":"6f7a292072c8653cb57096ef56ca1c915789f622ca36c5557cba0cd1a2c2801e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f7a292072c8653cb57096ef56ca1c915789f622ca36c5557cba0cd1a2c2801e","first_computed_at":"2026-05-17T23:43:02.909440Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:02.909440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vtbA6hpyuO/KmA/dKq42SAcJD7uQ0I1/wTvy30k8kkkbggVmtDZRBQj3rOj2IGjNFv4kzOUOvp5ZmUUZgJvcCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:02.909908Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.07787","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e33c30275a85785255836951a9406eceee64985b5c9ae45ca92ee2609fed5212","sha256:1820da0061649ae5b7ed5c5f724d9eec0d041767eef6df9788c3d55aa3353a17"],"state_sha256":"aee4539563d4123e036f8b0825f4521541ca2aefc2572dce12a5d3488822f8ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LI5TvQthrCo/A4FQXevWXmQh+xgTAam/Enpbe1oXuDXhf2DYQ5CMWHmoOR+9+TRXv5yW5Ex6LtBKa2dsvkX2Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T23:17:54.999004Z","bundle_sha256":"460febed09c69ae27a3092fdaf9544afe834c9e946dcb6d092e430fd2ae820d4"}}