{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:QI5JAEECCY3WZFBALBE5UOOFOI","short_pith_number":"pith:QI5JAEEC","canonical_record":{"source":{"id":"2003.08341","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-18T17:08:37Z","cross_cats_sorted":[],"title_canon_sha256":"1b31e455a6cf2e9447cfc75a6648a84b4a6990899f6ededc221210dc3b55ea01","abstract_canon_sha256":"f8b0f549194bd57e6c7b51477cb8ef45551ddc9fcad8aa3aa653ad525d98bb00"},"schema_version":"1.0"},"canonical_sha256":"823a90108216376c94205849da39c572120e5417073a3917b20d9d49ff7d887d","source":{"kind":"arxiv","id":"2003.08341","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.08341","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"arxiv_version","alias_value":"2003.08341v3","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.08341","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_12","alias_value":"QI5JAEECCY3W","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_16","alias_value":"QI5JAEECCY3WZFBA","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_8","alias_value":"QI5JAEEC","created_at":"2026-07-05T03:36:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:QI5JAEECCY3WZFBALBE5UOOFOI","target":"record","payload":{"canonical_record":{"source":{"id":"2003.08341","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-18T17:08:37Z","cross_cats_sorted":[],"title_canon_sha256":"1b31e455a6cf2e9447cfc75a6648a84b4a6990899f6ededc221210dc3b55ea01","abstract_canon_sha256":"f8b0f549194bd57e6c7b51477cb8ef45551ddc9fcad8aa3aa653ad525d98bb00"},"schema_version":"1.0"},"canonical_sha256":"823a90108216376c94205849da39c572120e5417073a3917b20d9d49ff7d887d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:36:34.281063Z","signature_b64":"Er/f/uPDVmh8i0tZC9jk68OWj/MporDs/B2ijsUeYP6e+iZtu5f3YImZdcRb4Gr3jP+efSBVuXOC18k3c0LxCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"823a90108216376c94205849da39c572120e5417073a3917b20d9d49ff7d887d","last_reissued_at":"2026-07-05T03:36:34.280693Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:36:34.280693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.08341","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":"2026-07-05T03:36:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hMUm33uptBYNGPpCRX0McDpzoo3yBNDGHSaplVTeoHERyc8Y+2WuCv1pOCOz3DXkWLNqkug/IRima20SRfPBCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:31:23.928248Z"},"content_sha256":"e18a5e1eec9678803bf709c02d85125ab905c56751cf7a802870fa3d9ef0caaf","schema_version":"1.0","event_id":"sha256:e18a5e1eec9678803bf709c02d85125ab905c56751cf7a802870fa3d9ef0caaf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:QI5JAEECCY3WZFBALBE5UOOFOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrafast formation of transient 2D diamond-like structure in twisted bilayer graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alex Hume Reid, Bin Wen, Dandan Hui, Duan Luo, Ilke Arslan, Jianguo Wen, Jie Yang, Jinshou Tian, Maria K. Y. Chan, Michael E. Kozina, Renkai Li, S. K. R. S. Sankaranarayanan, Stephen Weathersby, Suji Park, Tijana Rajh, Troy D. Loeffler, Xiaozhe Shen, Xijie Wang, Xing Wang, Yang Ren","submitted_at":"2020-03-18T17:08:37Z","abstract_excerpt":"Due to the absence of matching carbon atoms at honeycomb centers with carbon atoms in adjacent graphene sheets, theorists predicted that a sliding process is needed to form AA, AB, or ABC stacking when directly converting graphite into sp3 bonded diamond. Here, using twisted bilayer graphene, which naturally provides AA and AB stacking configurations, we report the ultrafast formation of a transient 2D diamond-like structure (which is not observed in aligned graphene) under femtosecond laser irradiation. This photo-induced phase transition is evidenced by the appearance of new bond lengths of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.08341","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2003.08341/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":"2026-07-05T03:36:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Mpf/P0a7+kTmwIINAQJSjes4YzA5B9igW6JKYpiulZt0wfxTdHYHzga6Ligw8TMuNIcm+T9ohuGinqK/em7BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:31:23.928696Z"},"content_sha256":"d4574e3c6cf752a37a8a1152676972c80032fd64711f44e4425229c003ba336f","schema_version":"1.0","event_id":"sha256:d4574e3c6cf752a37a8a1152676972c80032fd64711f44e4425229c003ba336f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QI5JAEECCY3WZFBALBE5UOOFOI/bundle.json","state_url":"https://pith.science/pith/QI5JAEECCY3WZFBALBE5UOOFOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QI5JAEECCY3WZFBALBE5UOOFOI/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":"2026-08-06T19:31:23Z","links":{"resolver":"https://pith.science/pith/QI5JAEECCY3WZFBALBE5UOOFOI","bundle":"https://pith.science/pith/QI5JAEECCY3WZFBALBE5UOOFOI/bundle.json","state":"https://pith.science/pith/QI5JAEECCY3WZFBALBE5UOOFOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QI5JAEECCY3WZFBALBE5UOOFOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:QI5JAEECCY3WZFBALBE5UOOFOI","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":"f8b0f549194bd57e6c7b51477cb8ef45551ddc9fcad8aa3aa653ad525d98bb00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-18T17:08:37Z","title_canon_sha256":"1b31e455a6cf2e9447cfc75a6648a84b4a6990899f6ededc221210dc3b55ea01"},"schema_version":"1.0","source":{"id":"2003.08341","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.08341","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"arxiv_version","alias_value":"2003.08341v3","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.08341","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_12","alias_value":"QI5JAEECCY3W","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_16","alias_value":"QI5JAEECCY3WZFBA","created_at":"2026-07-05T03:36:34Z"},{"alias_kind":"pith_short_8","alias_value":"QI5JAEEC","created_at":"2026-07-05T03:36:34Z"}],"graph_snapshots":[{"event_id":"sha256:d4574e3c6cf752a37a8a1152676972c80032fd64711f44e4425229c003ba336f","target":"graph","created_at":"2026-07-05T03:36:34Z","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/2003.08341/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Due to the absence of matching carbon atoms at honeycomb centers with carbon atoms in adjacent graphene sheets, theorists predicted that a sliding process is needed to form AA, AB, or ABC stacking when directly converting graphite into sp3 bonded diamond. Here, using twisted bilayer graphene, which naturally provides AA and AB stacking configurations, we report the ultrafast formation of a transient 2D diamond-like structure (which is not observed in aligned graphene) under femtosecond laser irradiation. This photo-induced phase transition is evidenced by the appearance of new bond lengths of ","authors_text":"Alex Hume Reid, Bin Wen, Dandan Hui, Duan Luo, Ilke Arslan, Jianguo Wen, Jie Yang, Jinshou Tian, Maria K. Y. Chan, Michael E. Kozina, Renkai Li, S. K. R. S. Sankaranarayanan, Stephen Weathersby, Suji Park, Tijana Rajh, Troy D. Loeffler, Xiaozhe Shen, Xijie Wang, Xing Wang, Yang Ren","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-18T17:08:37Z","title":"Ultrafast formation of transient 2D diamond-like structure in twisted bilayer graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.08341","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:e18a5e1eec9678803bf709c02d85125ab905c56751cf7a802870fa3d9ef0caaf","target":"record","created_at":"2026-07-05T03:36:34Z","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":"f8b0f549194bd57e6c7b51477cb8ef45551ddc9fcad8aa3aa653ad525d98bb00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-18T17:08:37Z","title_canon_sha256":"1b31e455a6cf2e9447cfc75a6648a84b4a6990899f6ededc221210dc3b55ea01"},"schema_version":"1.0","source":{"id":"2003.08341","kind":"arxiv","version":3}},"canonical_sha256":"823a90108216376c94205849da39c572120e5417073a3917b20d9d49ff7d887d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"823a90108216376c94205849da39c572120e5417073a3917b20d9d49ff7d887d","first_computed_at":"2026-07-05T03:36:34.280693Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:36:34.280693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Er/f/uPDVmh8i0tZC9jk68OWj/MporDs/B2ijsUeYP6e+iZtu5f3YImZdcRb4Gr3jP+efSBVuXOC18k3c0LxCA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:36:34.281063Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.08341","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e18a5e1eec9678803bf709c02d85125ab905c56751cf7a802870fa3d9ef0caaf","sha256:d4574e3c6cf752a37a8a1152676972c80032fd64711f44e4425229c003ba336f"],"state_sha256":"f5c1f59c3a6e39f67680d242641399d3db5dc57e5231d81bc4de791aea882e8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w0Pmgtw1yd4hO6SlHXBaQFJD1TEJIVwAeRmXzO+kFjnM1U4z9p794Huc6nNCDkMdPphCBiaJ3UG3giDfptqOCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T19:31:23.931345Z","bundle_sha256":"24757cdea621f2e7acd8055ffe35cf605400764877016d37d9c8153c8c180234"}}