{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:P5XKCQCB4VCBEDWBDSSL4IKFYJ","short_pith_number":"pith:P5XKCQCB","canonical_record":{"source":{"id":"1006.3572","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-06-17T21:21:12Z","cross_cats_sorted":[],"title_canon_sha256":"2541e38152cdb003a0b00d07ce97029666b58dc40a819f3eb8c5d3431bd33677","abstract_canon_sha256":"153d1fd11db0afef0cb6e1b55c8e0dee8281c17d7cab909c7c97bda3d7e21aa5"},"schema_version":"1.0"},"canonical_sha256":"7f6ea14041e544120ec11ca4be2145c2563c38fa91decd7f8beb667e7e9088c6","source":{"kind":"arxiv","id":"1006.3572","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.3572","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"1006.3572v2","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.3572","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"P5XKCQCB4VCB","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"P5XKCQCB4VCBEDWB","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"P5XKCQCB","created_at":"2026-05-18T12:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:P5XKCQCB4VCBEDWBDSSL4IKFYJ","target":"record","payload":{"canonical_record":{"source":{"id":"1006.3572","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-06-17T21:21:12Z","cross_cats_sorted":[],"title_canon_sha256":"2541e38152cdb003a0b00d07ce97029666b58dc40a819f3eb8c5d3431bd33677","abstract_canon_sha256":"153d1fd11db0afef0cb6e1b55c8e0dee8281c17d7cab909c7c97bda3d7e21aa5"},"schema_version":"1.0"},"canonical_sha256":"7f6ea14041e544120ec11ca4be2145c2563c38fa91decd7f8beb667e7e9088c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:44.818806Z","signature_b64":"0cizohRqISZixK9Uvge1NWTD22e3ywVqB90Trpk5ZsQC8WHmvzK0QRHO1aF+OjrVTAcDn9kCHUAJFMMsHvXNDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f6ea14041e544120ec11ca4be2145c2563c38fa91decd7f8beb667e7e9088c6","last_reissued_at":"2026-05-18T02:06:44.818195Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:44.818195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.3572","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8zGmqS4f2s8xZoRER2XY8uE4A0RfZx84wr3tOCqg3OI2H+1Okug7PDWCrecLGcVTk+PpAJsJOVpkWDNUIL+iCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T22:52:49.727857Z"},"content_sha256":"a75dd798d0870f1853b131f6b4ecc662f51dbfcc1f55c7c8bb18ddc196183fec","schema_version":"1.0","event_id":"sha256:a75dd798d0870f1853b131f6b4ecc662f51dbfcc1f55c7c8bb18ddc196183fec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:P5XKCQCB4VCBEDWBDSSL4IKFYJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effects of edge magnetism and external electric field on energy gaps in multilayer graphene nanoribbons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bhagawan Sahu, Hongki Min, Sanjay K. Banerjee","submitted_at":"2010-06-17T21:21:12Z","abstract_excerpt":"Using first-principles density-functional theory, we study the electronic structure of multilayer graphene nanoribbons as a function of the ribbon width and the external electric field, applied perpendicular to the ribbon layers. We consider two types of edges (armchair and zigzag), each with two edge alignments (referred to as alpha- and beta-alignments). We show that, as in monolayer and bilayer armchair nanoribbons, multilayer armchair nanoribbons exhibit three classes of energy gaps which decrease with increasing width. Nonmagnetic multilayer zigzag nanoribbons have band structures that ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.3572","kind":"arxiv","version":2},"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":"2026-05-18T02:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SdpEMB6wNR24bUp4kJOMiaWVqy8caqh2+B7CNPYT+K8n7L2Qq/vpLqgfb/58jiN3YlVNAZvGRTAkuyiO24FQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T22:52:49.728492Z"},"content_sha256":"18e5ad916ff617375eed390ea2fce88d0f0e25acef525c68cad923bc582b343e","schema_version":"1.0","event_id":"sha256:18e5ad916ff617375eed390ea2fce88d0f0e25acef525c68cad923bc582b343e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/bundle.json","state_url":"https://pith.science/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/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":"2026-06-11T22:52:49Z","links":{"resolver":"https://pith.science/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ","bundle":"https://pith.science/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/bundle.json","state":"https://pith.science/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P5XKCQCB4VCBEDWBDSSL4IKFYJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:P5XKCQCB4VCBEDWBDSSL4IKFYJ","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":"153d1fd11db0afef0cb6e1b55c8e0dee8281c17d7cab909c7c97bda3d7e21aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-06-17T21:21:12Z","title_canon_sha256":"2541e38152cdb003a0b00d07ce97029666b58dc40a819f3eb8c5d3431bd33677"},"schema_version":"1.0","source":{"id":"1006.3572","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.3572","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"1006.3572v2","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.3572","created_at":"2026-05-18T02:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"P5XKCQCB4VCB","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"P5XKCQCB4VCBEDWB","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"P5XKCQCB","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:18e5ad916ff617375eed390ea2fce88d0f0e25acef525c68cad923bc582b343e","target":"graph","created_at":"2026-05-18T02:06:44Z","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":"Using first-principles density-functional theory, we study the electronic structure of multilayer graphene nanoribbons as a function of the ribbon width and the external electric field, applied perpendicular to the ribbon layers. We consider two types of edges (armchair and zigzag), each with two edge alignments (referred to as alpha- and beta-alignments). We show that, as in monolayer and bilayer armchair nanoribbons, multilayer armchair nanoribbons exhibit three classes of energy gaps which decrease with increasing width. Nonmagnetic multilayer zigzag nanoribbons have band structures that ar","authors_text":"Bhagawan Sahu, Hongki Min, Sanjay K. Banerjee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-06-17T21:21:12Z","title":"Effects of edge magnetism and external electric field on energy gaps in multilayer graphene nanoribbons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.3572","kind":"arxiv","version":2},"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:a75dd798d0870f1853b131f6b4ecc662f51dbfcc1f55c7c8bb18ddc196183fec","target":"record","created_at":"2026-05-18T02:06:44Z","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":"153d1fd11db0afef0cb6e1b55c8e0dee8281c17d7cab909c7c97bda3d7e21aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-06-17T21:21:12Z","title_canon_sha256":"2541e38152cdb003a0b00d07ce97029666b58dc40a819f3eb8c5d3431bd33677"},"schema_version":"1.0","source":{"id":"1006.3572","kind":"arxiv","version":2}},"canonical_sha256":"7f6ea14041e544120ec11ca4be2145c2563c38fa91decd7f8beb667e7e9088c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f6ea14041e544120ec11ca4be2145c2563c38fa91decd7f8beb667e7e9088c6","first_computed_at":"2026-05-18T02:06:44.818195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:44.818195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0cizohRqISZixK9Uvge1NWTD22e3ywVqB90Trpk5ZsQC8WHmvzK0QRHO1aF+OjrVTAcDn9kCHUAJFMMsHvXNDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:44.818806Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.3572","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a75dd798d0870f1853b131f6b4ecc662f51dbfcc1f55c7c8bb18ddc196183fec","sha256:18e5ad916ff617375eed390ea2fce88d0f0e25acef525c68cad923bc582b343e"],"state_sha256":"62e6fc53f1b97348b688e3c0873ea3d9fa5ad23d4c09c60456b7e6360c457e15"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U557imHPBGinmtGlFP0ogKVy/1lHoJLGDbae/uq001x6icW1/G2DX+wp9tB0atbM0jXh2He66GFdIvNSChM9Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T22:52:49.732791Z","bundle_sha256":"92ffd9fec1ee1b8087fae3efab6625e7268a901db85879114a341a6bcbfd250d"}}