{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QPDTE2XWVPLJU5AHMMZVFXITBV","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":"2da6cb6bf994a1d41e3daa2ed924407ba98d63345990af53337e0bb8edac5146","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-03-03T17:34:59Z","title_canon_sha256":"654cc6f764a505ad77b4c073fae78314d2d787dbb3f9c67122c95ab83b792ad3"},"schema_version":"1.0","source":{"id":"1403.0496","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.0496","created_at":"2026-05-18T02:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"1403.0496v3","created_at":"2026-05-18T02:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.0496","created_at":"2026-05-18T02:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"QPDTE2XWVPLJ","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QPDTE2XWVPLJU5AH","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QPDTE2XW","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:6d003df00a71ed6180d6ae72b1d850752f5aa2ec935a255b3c2cfd0c5c3a357e","target":"graph","created_at":"2026-05-18T02:26:45Z","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":"Recent progress in preparing well controlled 2D van der Waals heterojunctions has opened up a new frontier in materials physics. In this paper we address the intriguing energy gaps that are sometimes observed when a graphene sheet is placed on a hexagonal boron nitride substrate, demonstrating that they are produced by an interesting interplay between structural and electronic properties, including electronic many-body exchange interactions. Our theory is able to explain the observed gap behavior by accounting first for the structural relaxation of graphene's carbon atoms when placed on a boro","authors_text":"Allan H. MacDonald, Ashley DaSilva, Jeil Jung, Shaffique Adam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-03-03T17:34:59Z","title":"Origin of band gaps in graphene on hexagonal boron nitride"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.0496","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":"sha256:8a6ab7b50b6f0f90f8e23876f07a51d52b0b243a5ef6d598223a34b2662831bf","target":"record","created_at":"2026-05-18T02:26:45Z","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":"2da6cb6bf994a1d41e3daa2ed924407ba98d63345990af53337e0bb8edac5146","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-03-03T17:34:59Z","title_canon_sha256":"654cc6f764a505ad77b4c073fae78314d2d787dbb3f9c67122c95ab83b792ad3"},"schema_version":"1.0","source":{"id":"1403.0496","kind":"arxiv","version":3}},"canonical_sha256":"83c7326af6abd69a7407633352dd130d7e129f067947c44b589192c3cab8eb4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83c7326af6abd69a7407633352dd130d7e129f067947c44b589192c3cab8eb4e","first_computed_at":"2026-05-18T02:26:45.528523Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:26:45.528523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z4tttf9tE06Cf+7GiVJvaFF5MUY4IduGHY3kQp1oGLVSU5o1nrNrO1wAtQLpi4Qw98oiXGBGXs4tFafqQ7B/Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:26:45.529033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.0496","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a6ab7b50b6f0f90f8e23876f07a51d52b0b243a5ef6d598223a34b2662831bf","sha256:6d003df00a71ed6180d6ae72b1d850752f5aa2ec935a255b3c2cfd0c5c3a357e"],"state_sha256":"279fa4937cee6ffa656ddbfab72a459a32b71dcb3ad136eaf7ff4cf84527c4f8"}