{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PZ4I7NSYUWHKPRY4GNQUBT35NV","short_pith_number":"pith:PZ4I7NSY","canonical_record":{"source":{"id":"1111.0399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-02T06:10:31Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c9a1d3c0765a335b6738f5849d24e5db3fe626bdcac98a5e255d8bb459bb0aac","abstract_canon_sha256":"d2a40e85f66280c39381538cb81f079c2518892c827dc601c993a024ff40822a"},"schema_version":"1.0"},"canonical_sha256":"7e788fb658a58ea7c71c336140cf7d6d482822e9da92d927c370316cdb9bf378","source":{"kind":"arxiv","id":"1111.0399","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0399","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0399v1","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0399","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"PZ4I7NSYUWHK","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PZ4I7NSYUWHKPRY4","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PZ4I7NSY","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PZ4I7NSYUWHKPRY4GNQUBT35NV","target":"record","payload":{"canonical_record":{"source":{"id":"1111.0399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-02T06:10:31Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c9a1d3c0765a335b6738f5849d24e5db3fe626bdcac98a5e255d8bb459bb0aac","abstract_canon_sha256":"d2a40e85f66280c39381538cb81f079c2518892c827dc601c993a024ff40822a"},"schema_version":"1.0"},"canonical_sha256":"7e788fb658a58ea7c71c336140cf7d6d482822e9da92d927c370316cdb9bf378","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:48.591236Z","signature_b64":"pEuTz7Oupd7fT3tQNGSzFiWFGnMcXSYKxBd3+mQ8GvkYu2jeIbrCORcVuwgmYYJo4Nrr1kziSq1I7qPcMscNBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e788fb658a58ea7c71c336140cf7d6d482822e9da92d927c370316cdb9bf378","last_reissued_at":"2026-05-18T01:59:48.590606Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:48.590606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.0399","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":"2026-05-18T01:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tZ2WIfao1oyv2aEv0jYTotBCQ5Q32uEAV24KCSz4wkuYUSjim5bx8hNB39xzMoglPd2O4j41oGgWO5kz/Z8ZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:01:18.562338Z"},"content_sha256":"1accf43610a0e8bb9b17ad2a15c6488d7a64a6d4881f77d97fa06af3a6bc5ce4","schema_version":"1.0","event_id":"sha256:1accf43610a0e8bb9b17ad2a15c6488d7a64a6d4881f77d97fa06af3a6bc5ce4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PZ4I7NSYUWHKPRY4GNQUBT35NV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene on incommensurate substrates: trigonal warping and emerging Dirac cone replicas with halved group velocity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Carmine Ortix, Jeroen van den Brink, Liping Yang","submitted_at":"2011-11-02T06:10:31Z","abstract_excerpt":"The adhesion of graphene on slightly lattice-mismatched surfaces, for instance of hexagonal boron nitride (hBN) or Ir(111), gives rise to a complex landscape of sublattice symmetry-breaking potentials for the Dirac fermions. Whereas a gap at the Dirac point opens for perfectly lattice-matched graphene on hBN, we show that the small lattice incommensurability prevents the opening of this gap and rather leads to a renormalized Dirac dispersion with a trigonal warping. This warping breaks the effective time reversal symmetry in a single valley. On top of this a new set of massless Dirac fermions "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0399","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":"2026-05-18T01:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HYyoFKC2FdeJX3o2GZKqKPzXzWOJWxLWIIkUnyT4o8sO0/7EpfatNtr/AnxHmqPzm6VTfElXKOM1a7jOYtpzBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:01:18.562685Z"},"content_sha256":"81cf495cd5404198b6a8599adfdbddf030718a37932a06a5db6d9cf06bcae60f","schema_version":"1.0","event_id":"sha256:81cf495cd5404198b6a8599adfdbddf030718a37932a06a5db6d9cf06bcae60f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/bundle.json","state_url":"https://pith.science/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/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":"2026-06-02T00:01:18Z","links":{"resolver":"https://pith.science/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV","bundle":"https://pith.science/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/bundle.json","state":"https://pith.science/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PZ4I7NSYUWHKPRY4GNQUBT35NV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PZ4I7NSYUWHKPRY4GNQUBT35NV","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":"d2a40e85f66280c39381538cb81f079c2518892c827dc601c993a024ff40822a","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-02T06:10:31Z","title_canon_sha256":"c9a1d3c0765a335b6738f5849d24e5db3fe626bdcac98a5e255d8bb459bb0aac"},"schema_version":"1.0","source":{"id":"1111.0399","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0399","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0399v1","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0399","created_at":"2026-05-18T01:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"PZ4I7NSYUWHK","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PZ4I7NSYUWHKPRY4","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PZ4I7NSY","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:81cf495cd5404198b6a8599adfdbddf030718a37932a06a5db6d9cf06bcae60f","target":"graph","created_at":"2026-05-18T01:59:48Z","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":"The adhesion of graphene on slightly lattice-mismatched surfaces, for instance of hexagonal boron nitride (hBN) or Ir(111), gives rise to a complex landscape of sublattice symmetry-breaking potentials for the Dirac fermions. Whereas a gap at the Dirac point opens for perfectly lattice-matched graphene on hBN, we show that the small lattice incommensurability prevents the opening of this gap and rather leads to a renormalized Dirac dispersion with a trigonal warping. This warping breaks the effective time reversal symmetry in a single valley. On top of this a new set of massless Dirac fermions ","authors_text":"Carmine Ortix, Jeroen van den Brink, Liping Yang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-02T06:10:31Z","title":"Graphene on incommensurate substrates: trigonal warping and emerging Dirac cone replicas with halved group velocity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0399","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":"sha256:1accf43610a0e8bb9b17ad2a15c6488d7a64a6d4881f77d97fa06af3a6bc5ce4","target":"record","created_at":"2026-05-18T01:59:48Z","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":"d2a40e85f66280c39381538cb81f079c2518892c827dc601c993a024ff40822a","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-11-02T06:10:31Z","title_canon_sha256":"c9a1d3c0765a335b6738f5849d24e5db3fe626bdcac98a5e255d8bb459bb0aac"},"schema_version":"1.0","source":{"id":"1111.0399","kind":"arxiv","version":1}},"canonical_sha256":"7e788fb658a58ea7c71c336140cf7d6d482822e9da92d927c370316cdb9bf378","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e788fb658a58ea7c71c336140cf7d6d482822e9da92d927c370316cdb9bf378","first_computed_at":"2026-05-18T01:59:48.590606Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:48.590606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pEuTz7Oupd7fT3tQNGSzFiWFGnMcXSYKxBd3+mQ8GvkYu2jeIbrCORcVuwgmYYJo4Nrr1kziSq1I7qPcMscNBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:48.591236Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.0399","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1accf43610a0e8bb9b17ad2a15c6488d7a64a6d4881f77d97fa06af3a6bc5ce4","sha256:81cf495cd5404198b6a8599adfdbddf030718a37932a06a5db6d9cf06bcae60f"],"state_sha256":"d1aa22f8b36c7470ae8b7d8f04d6c907820cbc22b6ae580a34a5f255211e1606"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3RBtq1Nadu/EGMobIv6hafGNYjTi75GWtXLHPqwccBgBZF43JYa8QKdz2KqWrArtKy6RbYIwDY0WXxK44yrAAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T00:01:18.564635Z","bundle_sha256":"06fcfb856c53d54feb75ff7b8fac921024cadb37fc1041548d1a27bddbb03a9b"}}