{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GR54HSHDMTPTS4SDJAZCXK3IIS","short_pith_number":"pith:GR54HSHD","canonical_record":{"source":{"id":"1102.3798","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-02-18T10:01:09Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"63e9f67d080c612a7fb9612f8f34f72e4f1322946d1ce5ac91922242db48a488","abstract_canon_sha256":"5b123966509057b2adabcaa0beaf41d0b48e9311769b629ffc091e5bf498cc74"},"schema_version":"1.0"},"canonical_sha256":"347bc3c8e364df39724348322bab6844b20a1daa959f2e96d79632e1d76eb672","source":{"kind":"arxiv","id":"1102.3798","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.3798","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"1102.3798v1","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.3798","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"GR54HSHDMTPT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GR54HSHDMTPTS4SD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GR54HSHD","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GR54HSHDMTPTS4SDJAZCXK3IIS","target":"record","payload":{"canonical_record":{"source":{"id":"1102.3798","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-02-18T10:01:09Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"63e9f67d080c612a7fb9612f8f34f72e4f1322946d1ce5ac91922242db48a488","abstract_canon_sha256":"5b123966509057b2adabcaa0beaf41d0b48e9311769b629ffc091e5bf498cc74"},"schema_version":"1.0"},"canonical_sha256":"347bc3c8e364df39724348322bab6844b20a1daa959f2e96d79632e1d76eb672","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:09.498471Z","signature_b64":"2xSR+8I7W5e6qxLBbVmztGCIuG6q8h9ABK/kDRduQHvcRjTZfAL8qJHZFFwb7sqYmJTtCs9/TeD32nMv12CdAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"347bc3c8e364df39724348322bab6844b20a1daa959f2e96d79632e1d76eb672","last_reissued_at":"2026-05-18T02:03:09.497538Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:09.497538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.3798","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":"2026-05-18T02:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cds12hFENktBiva2WeeDMAqLLsjAudqzsPEup0lvDQLxxlKZw77K9KNM5pdESGWJfYhU+sVjXRRVfOgscIvcBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:34:25.096002Z"},"content_sha256":"5a46481699d2ebb9aeaf5e6ef1d641dd8ecdfe84104cfdc77fa01d9559e9a0ea","schema_version":"1.0","event_id":"sha256:5a46481699d2ebb9aeaf5e6ef1d641dd8ecdfe84104cfdc77fa01d9559e9a0ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GR54HSHDMTPTS4SDJAZCXK3IIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene on the carbon face of SiC: electronic structure modification by hydrogen intercalation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"F. Hiebel, J.-Y. Veuillen, L. Magaud, P. Mallet","submitted_at":"2011-02-18T10:01:09Z","abstract_excerpt":"It has been shown that the first C layer on the SiC(0001)(2{\\times}2)C surface already exhibits graphene-like electronic structure, with linear pi bands near the Dirac point. Indeed, the (2{\\times}2)C reconstruction, with a Si adatom and C restatom structure, efficiently passivates the SiC(0001) surface thanks to an adatom/restatom charge transfer mechanism. Here, we study the effects of interface modifications on the graphene layer using density functional theory calculations. The modifications we consider are inspired from native interface defects observed by scanning tunneling microscopy. O"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.3798","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":"2026-05-18T02:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HFVacLIhAiwwDmHEgxRmKEmCezqfwvdIQs+BbRGEXNBsrMOMuR8fZUF7zlGWvdfhsU9AfrBAtHwDuIY0REWMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:34:25.096603Z"},"content_sha256":"adab91d17d984790c7264184d8385b8c15f7c6bd2e262f59e8a36a0c94357fce","schema_version":"1.0","event_id":"sha256:adab91d17d984790c7264184d8385b8c15f7c6bd2e262f59e8a36a0c94357fce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/bundle.json","state_url":"https://pith.science/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/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":"2026-07-07T07:34:25Z","links":{"resolver":"https://pith.science/pith/GR54HSHDMTPTS4SDJAZCXK3IIS","bundle":"https://pith.science/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/bundle.json","state":"https://pith.science/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GR54HSHDMTPTS4SDJAZCXK3IIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GR54HSHDMTPTS4SDJAZCXK3IIS","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":"5b123966509057b2adabcaa0beaf41d0b48e9311769b629ffc091e5bf498cc74","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-02-18T10:01:09Z","title_canon_sha256":"63e9f67d080c612a7fb9612f8f34f72e4f1322946d1ce5ac91922242db48a488"},"schema_version":"1.0","source":{"id":"1102.3798","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.3798","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"1102.3798v1","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.3798","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"GR54HSHDMTPT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GR54HSHDMTPTS4SD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GR54HSHD","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:adab91d17d984790c7264184d8385b8c15f7c6bd2e262f59e8a36a0c94357fce","target":"graph","created_at":"2026-05-18T02:03:09Z","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":"It has been shown that the first C layer on the SiC(0001)(2{\\times}2)C surface already exhibits graphene-like electronic structure, with linear pi bands near the Dirac point. Indeed, the (2{\\times}2)C reconstruction, with a Si adatom and C restatom structure, efficiently passivates the SiC(0001) surface thanks to an adatom/restatom charge transfer mechanism. Here, we study the effects of interface modifications on the graphene layer using density functional theory calculations. The modifications we consider are inspired from native interface defects observed by scanning tunneling microscopy. O","authors_text":"F. Hiebel, J.-Y. Veuillen, L. Magaud, P. Mallet","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-02-18T10:01:09Z","title":"Graphene on the carbon face of SiC: electronic structure modification by hydrogen intercalation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.3798","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":"sha256:5a46481699d2ebb9aeaf5e6ef1d641dd8ecdfe84104cfdc77fa01d9559e9a0ea","target":"record","created_at":"2026-05-18T02:03:09Z","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":"5b123966509057b2adabcaa0beaf41d0b48e9311769b629ffc091e5bf498cc74","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-02-18T10:01:09Z","title_canon_sha256":"63e9f67d080c612a7fb9612f8f34f72e4f1322946d1ce5ac91922242db48a488"},"schema_version":"1.0","source":{"id":"1102.3798","kind":"arxiv","version":1}},"canonical_sha256":"347bc3c8e364df39724348322bab6844b20a1daa959f2e96d79632e1d76eb672","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"347bc3c8e364df39724348322bab6844b20a1daa959f2e96d79632e1d76eb672","first_computed_at":"2026-05-18T02:03:09.497538Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:09.497538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2xSR+8I7W5e6qxLBbVmztGCIuG6q8h9ABK/kDRduQHvcRjTZfAL8qJHZFFwb7sqYmJTtCs9/TeD32nMv12CdAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:09.498471Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.3798","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a46481699d2ebb9aeaf5e6ef1d641dd8ecdfe84104cfdc77fa01d9559e9a0ea","sha256:adab91d17d984790c7264184d8385b8c15f7c6bd2e262f59e8a36a0c94357fce"],"state_sha256":"26e9860d7603fe957949701cf863327777d05b8444535586c532bf089046a68c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7LPbmBIXlM2GXvqiuQZXEdOQn6+1lnM5HCyIJny+Tr2tuo8e4i/ZLE8KspxN+7/kxz2d6T1apM4Ni8fRf21qAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:34:25.099956Z","bundle_sha256":"b3f6981e0d449795c3c80108f1302e4b56b6745c686b54af92c7cedcba2b53ae"}}