{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FDI3PGIX2W4TTLZIMYHVBJLCK2","short_pith_number":"pith:FDI3PGIX","canonical_record":{"source":{"id":"1907.08932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-07-21T08:07:33Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"fa66ccaaf91879f6204d8313417661dbea35f2e359a737724db9f4e923fc1c0e","abstract_canon_sha256":"bc6f4a0c754721b2b5185ed7273440edd24b5e9ff89cea49ae45263a1ca7247e"},"schema_version":"1.0"},"canonical_sha256":"28d1b79917d5b939af28660f50a56256bf001ba5628753aa9f970e1e3ea1134d","source":{"kind":"arxiv","id":"1907.08932","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08932","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08932v1","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08932","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_12","alias_value":"FDI3PGIX2W4T","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_16","alias_value":"FDI3PGIX2W4TTLZI","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_8","alias_value":"FDI3PGIX","created_at":"2026-07-05T02:09:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FDI3PGIX2W4TTLZIMYHVBJLCK2","target":"record","payload":{"canonical_record":{"source":{"id":"1907.08932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-07-21T08:07:33Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"fa66ccaaf91879f6204d8313417661dbea35f2e359a737724db9f4e923fc1c0e","abstract_canon_sha256":"bc6f4a0c754721b2b5185ed7273440edd24b5e9ff89cea49ae45263a1ca7247e"},"schema_version":"1.0"},"canonical_sha256":"28d1b79917d5b939af28660f50a56256bf001ba5628753aa9f970e1e3ea1134d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:09:34.951670Z","signature_b64":"H/E5DBFeYmyDO4HUivwELaSwk7B6A0zf4qVvCqHXyiWtM1tErR7GQXPe6NaNxyIL82WlVDE5So2zYhkXv9UOAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28d1b79917d5b939af28660f50a56256bf001ba5628753aa9f970e1e3ea1134d","last_reissued_at":"2026-07-05T02:09:34.951289Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:09:34.951289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.08932","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":"2026-07-05T02:09:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jp0epPoIEHOW++87n03ipb26zKA+gz5KUlOBEZEGtqpcYKy11pkCFjO5KV/IzVbcAfULlGVe0o556QM5pk63AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:46:41.207419Z"},"content_sha256":"d992afb192c837fa0ab39c3418ea133579d7e7198ed7b8ee7afebe27ba357cec","schema_version":"1.0","event_id":"sha256:d992afb192c837fa0ab39c3418ea133579d7e7198ed7b8ee7afebe27ba357cec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FDI3PGIX2W4TTLZIMYHVBJLCK2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted graphene systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Jianpeng Liu, Xi Dai","submitted_at":"2019-07-21T08:07:33Z","abstract_excerpt":"We study the anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted bilayer graphene (TBG) aligned with hexagonal boron nitride (hBN) substrate as well as twisted double bilayer graphene systems. We show that non-vanishing valley polarizations in twisted graphene systems would give rise to anomalous Hall effect which can be tuned by in-plane magnetic fields. The valley polarized states are also associated with giant Faraday/Kerr rotations in the terahertz frequency regime. Moreover, both hBN-aligned TBG and TDBG exhibit colossal nonlinear optical respons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08932","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/1907.08932/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":"2026-07-05T02:09:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b55UZqlpgQ+BpkAQ4H8tc+GITAsHbGKj4+/KeAIuoIgIVyXvHaLIS11zBVHKmxmS+w6AiLeBVzJsu9fOofPyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:46:41.208026Z"},"content_sha256":"227fa9a0392e4105a2cc701af57577aa8791c1ac68a3fed04d88063547880bec","schema_version":"1.0","event_id":"sha256:227fa9a0392e4105a2cc701af57577aa8791c1ac68a3fed04d88063547880bec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/bundle.json","state_url":"https://pith.science/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/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":"2026-07-05T15:46:41Z","links":{"resolver":"https://pith.science/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2","bundle":"https://pith.science/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/bundle.json","state":"https://pith.science/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FDI3PGIX2W4TTLZIMYHVBJLCK2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FDI3PGIX2W4TTLZIMYHVBJLCK2","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":"bc6f4a0c754721b2b5185ed7273440edd24b5e9ff89cea49ae45263a1ca7247e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-07-21T08:07:33Z","title_canon_sha256":"fa66ccaaf91879f6204d8313417661dbea35f2e359a737724db9f4e923fc1c0e"},"schema_version":"1.0","source":{"id":"1907.08932","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08932","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08932v1","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08932","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_12","alias_value":"FDI3PGIX2W4T","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_16","alias_value":"FDI3PGIX2W4TTLZI","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_8","alias_value":"FDI3PGIX","created_at":"2026-07-05T02:09:34Z"}],"graph_snapshots":[{"event_id":"sha256:227fa9a0392e4105a2cc701af57577aa8791c1ac68a3fed04d88063547880bec","target":"graph","created_at":"2026-07-05T02:09:34Z","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/1907.08932/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted bilayer graphene (TBG) aligned with hexagonal boron nitride (hBN) substrate as well as twisted double bilayer graphene systems. We show that non-vanishing valley polarizations in twisted graphene systems would give rise to anomalous Hall effect which can be tuned by in-plane magnetic fields. The valley polarized states are also associated with giant Faraday/Kerr rotations in the terahertz frequency regime. Moreover, both hBN-aligned TBG and TDBG exhibit colossal nonlinear optical respons","authors_text":"Jianpeng Liu, Xi Dai","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-07-21T08:07:33Z","title":"Anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted graphene systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08932","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:d992afb192c837fa0ab39c3418ea133579d7e7198ed7b8ee7afebe27ba357cec","target":"record","created_at":"2026-07-05T02:09:34Z","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":"bc6f4a0c754721b2b5185ed7273440edd24b5e9ff89cea49ae45263a1ca7247e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-07-21T08:07:33Z","title_canon_sha256":"fa66ccaaf91879f6204d8313417661dbea35f2e359a737724db9f4e923fc1c0e"},"schema_version":"1.0","source":{"id":"1907.08932","kind":"arxiv","version":1}},"canonical_sha256":"28d1b79917d5b939af28660f50a56256bf001ba5628753aa9f970e1e3ea1134d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28d1b79917d5b939af28660f50a56256bf001ba5628753aa9f970e1e3ea1134d","first_computed_at":"2026-07-05T02:09:34.951289Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:09:34.951289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H/E5DBFeYmyDO4HUivwELaSwk7B6A0zf4qVvCqHXyiWtM1tErR7GQXPe6NaNxyIL82WlVDE5So2zYhkXv9UOAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:09:34.951670Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08932","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d992afb192c837fa0ab39c3418ea133579d7e7198ed7b8ee7afebe27ba357cec","sha256:227fa9a0392e4105a2cc701af57577aa8791c1ac68a3fed04d88063547880bec"],"state_sha256":"953e1285b0bd2568672f7194a7a5831275e83612491ad21d9f985150bc0b5085"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kVint2K/x74WUxUW0Z4aF12P5daqkwiFOzw0PVy1E8TMSc3fEQOC15KTVe3e5lWx59CQ9y9doCgImLgWNXdYDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T15:46:41.211044Z","bundle_sha256":"36f4341827ef6e5251dee276f34cac54bedeffce155bd1b7bed234e5133d02b9"}}