{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZZWNOCYQB3IGUP6J7K5VUBQUXQ","short_pith_number":"pith:ZZWNOCYQ","canonical_record":{"source":{"id":"1411.3932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-11-14T15:13:21Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bc2c968f1be01f0de9c3bc07603e81027922a2b14b50076e9056796a3c8a4586","abstract_canon_sha256":"a7aa6522bd6356e516f210b879f87fba2ff21328cded96dea6606c173b805fe9"},"schema_version":"1.0"},"canonical_sha256":"ce6cd70b100ed06a3fc9fabb5a0614bc257c4d9ed2b0e8a7a41c04640e0c7d2f","source":{"kind":"arxiv","id":"1411.3932","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.3932","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"arxiv_version","alias_value":"1411.3932v1","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.3932","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"pith_short_12","alias_value":"ZZWNOCYQB3IG","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZZWNOCYQB3IGUP6J","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZZWNOCYQ","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZZWNOCYQB3IGUP6J7K5VUBQUXQ","target":"record","payload":{"canonical_record":{"source":{"id":"1411.3932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-11-14T15:13:21Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bc2c968f1be01f0de9c3bc07603e81027922a2b14b50076e9056796a3c8a4586","abstract_canon_sha256":"a7aa6522bd6356e516f210b879f87fba2ff21328cded96dea6606c173b805fe9"},"schema_version":"1.0"},"canonical_sha256":"ce6cd70b100ed06a3fc9fabb5a0614bc257c4d9ed2b0e8a7a41c04640e0c7d2f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:26:58.674509Z","signature_b64":"Jsh+1m1Mw35s7lZodUJNCwvr32bH6UM+8nkFgPlxLDr4I0srFPyY1ahBoRr1NOwIz1YalV+/WeoTy7tX8REbAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce6cd70b100ed06a3fc9fabb5a0614bc257c4d9ed2b0e8a7a41c04640e0c7d2f","last_reissued_at":"2026-05-18T02:26:58.673962Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:26:58.673962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.3932","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":"2026-05-18T02:26:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ml9SU4qcV9S2+onC1wo8BS28VTXIyJVBl5hOFwziJvUOEcE8LoJcsXPWpYiXVzHoCXodDcusT8PzZAjOsjljDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T16:23:14.904568Z"},"content_sha256":"1b72ed701b2904b56fdf301527a317f91ea69194193a2f7942dd78b12691047e","schema_version":"1.0","event_id":"sha256:1b72ed701b2904b56fdf301527a317f91ea69194193a2f7942dd78b12691047e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZZWNOCYQB3IGUP6J7K5VUBQUXQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electric Field Induced Topological Phase Transition in Two-Dimensional Few-layer Black Phosphorus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Fazzio, Alex Zunger, L. B. Abdalla, Qihang Liu, Xiuwen Zhang","submitted_at":"2014-11-14T15:13:21Z","abstract_excerpt":"Phosphorene is a novel two-dimensional material that can be isolated through mechanical exfoliation from layered black phosphorus, but unlike graphene and silicene, monolayer phosphorene has a large band gap. It was thus unsuspected to exhibit band inversion and the ensuing topological insulator behavior. It has recently attracted interest because of its proposed application as field effect transistors. Using first-principles calculations with applied perpendicular electric field F we predict a continuous transition from the normal insulator to a topological insulator and eventually to a metal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.3932","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":""},"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":"2026-05-18T02:26:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ydui1ckGQPZOOUGEUhOLPVKAfn5vLT6io2mkpFfPGJ9owAiuuCnhAZXzgGW0Kufllp76ugiLPb0Jy8xEsYJeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T16:23:14.904919Z"},"content_sha256":"c3e66253ea4b6f1d848748d0ff4fbd7091532fbde059d87e95dbe41d7cd13a04","schema_version":"1.0","event_id":"sha256:c3e66253ea4b6f1d848748d0ff4fbd7091532fbde059d87e95dbe41d7cd13a04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/bundle.json","state_url":"https://pith.science/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/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":"2026-06-04T16:23:14Z","links":{"resolver":"https://pith.science/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ","bundle":"https://pith.science/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/bundle.json","state":"https://pith.science/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZZWNOCYQB3IGUP6J7K5VUBQUXQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZZWNOCYQB3IGUP6J7K5VUBQUXQ","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":"a7aa6522bd6356e516f210b879f87fba2ff21328cded96dea6606c173b805fe9","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-11-14T15:13:21Z","title_canon_sha256":"bc2c968f1be01f0de9c3bc07603e81027922a2b14b50076e9056796a3c8a4586"},"schema_version":"1.0","source":{"id":"1411.3932","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.3932","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"arxiv_version","alias_value":"1411.3932v1","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.3932","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"pith_short_12","alias_value":"ZZWNOCYQB3IG","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZZWNOCYQB3IGUP6J","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZZWNOCYQ","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:c3e66253ea4b6f1d848748d0ff4fbd7091532fbde059d87e95dbe41d7cd13a04","target":"graph","created_at":"2026-05-18T02:26:58Z","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":"Phosphorene is a novel two-dimensional material that can be isolated through mechanical exfoliation from layered black phosphorus, but unlike graphene and silicene, monolayer phosphorene has a large band gap. It was thus unsuspected to exhibit band inversion and the ensuing topological insulator behavior. It has recently attracted interest because of its proposed application as field effect transistors. Using first-principles calculations with applied perpendicular electric field F we predict a continuous transition from the normal insulator to a topological insulator and eventually to a metal","authors_text":"A. Fazzio, Alex Zunger, L. B. Abdalla, Qihang Liu, Xiuwen Zhang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-11-14T15:13:21Z","title":"Electric Field Induced Topological Phase Transition in Two-Dimensional Few-layer Black Phosphorus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.3932","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":"sha256:1b72ed701b2904b56fdf301527a317f91ea69194193a2f7942dd78b12691047e","target":"record","created_at":"2026-05-18T02:26:58Z","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":"a7aa6522bd6356e516f210b879f87fba2ff21328cded96dea6606c173b805fe9","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-11-14T15:13:21Z","title_canon_sha256":"bc2c968f1be01f0de9c3bc07603e81027922a2b14b50076e9056796a3c8a4586"},"schema_version":"1.0","source":{"id":"1411.3932","kind":"arxiv","version":1}},"canonical_sha256":"ce6cd70b100ed06a3fc9fabb5a0614bc257c4d9ed2b0e8a7a41c04640e0c7d2f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce6cd70b100ed06a3fc9fabb5a0614bc257c4d9ed2b0e8a7a41c04640e0c7d2f","first_computed_at":"2026-05-18T02:26:58.673962Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:26:58.673962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jsh+1m1Mw35s7lZodUJNCwvr32bH6UM+8nkFgPlxLDr4I0srFPyY1ahBoRr1NOwIz1YalV+/WeoTy7tX8REbAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:26:58.674509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.3932","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b72ed701b2904b56fdf301527a317f91ea69194193a2f7942dd78b12691047e","sha256:c3e66253ea4b6f1d848748d0ff4fbd7091532fbde059d87e95dbe41d7cd13a04"],"state_sha256":"4a44e901199d97e973076efe053816fe41abe2d90d7a6b5777ebe38bdb1b8c1d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xGKDCe9wsopZcm2FEAxrgj6xW6Q9qSogozEspwyj8fQY+q9SBF0KVzKatqSXu47pPIFyO92jDGPP7xSL2Ti/Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T16:23:14.906904Z","bundle_sha256":"1153c6b305ad63fd4bcc9b35fa401f949e2e75311bed0c79aacdbc3b17074f8e"}}