{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2F5UQUT2UE77BAG2NCWBPYJRPW","short_pith_number":"pith:2F5UQUT2","canonical_record":{"source":{"id":"1102.4543","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-02-22T16:13:19Z","cross_cats_sorted":[],"title_canon_sha256":"566b9327dcf6a2866fb778ae7120ead1eade121b53b993f785cc52c71b3e9d2f","abstract_canon_sha256":"f54c5dbff3f03d453dca2ea98b019ff8862af11c315ced97310d80baaf79168c"},"schema_version":"1.0"},"canonical_sha256":"d17b48527aa13ff080da68ac17e1317daeacb01d90cae8832f40b5ff730fa0f2","source":{"kind":"arxiv","id":"1102.4543","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4543","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4543v2","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4543","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"2F5UQUT2UE77","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2F5UQUT2UE77BAG2","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2F5UQUT2","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2F5UQUT2UE77BAG2NCWBPYJRPW","target":"record","payload":{"canonical_record":{"source":{"id":"1102.4543","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-02-22T16:13:19Z","cross_cats_sorted":[],"title_canon_sha256":"566b9327dcf6a2866fb778ae7120ead1eade121b53b993f785cc52c71b3e9d2f","abstract_canon_sha256":"f54c5dbff3f03d453dca2ea98b019ff8862af11c315ced97310d80baaf79168c"},"schema_version":"1.0"},"canonical_sha256":"d17b48527aa13ff080da68ac17e1317daeacb01d90cae8832f40b5ff730fa0f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:06.494677Z","signature_b64":"GQtlgm85RsRgmzw8G7ASk6lMT9o7P8B8wRIfMUaxPxaR8BO5+7w4AQMJPE7di0XPFri2X5IKlsUcT31dYbBaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d17b48527aa13ff080da68ac17e1317daeacb01d90cae8832f40b5ff730fa0f2","last_reissued_at":"2026-05-18T02:03:06.494175Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:06.494175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.4543","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rLzR5qQkPKsS2YzHVjMy+GRDi9cohV6/VQ7IgvPeDGaMKKng5/2iDtD3lNqimZl1xCzFDhpVO9RMEWZMQL1qCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T23:15:51.390523Z"},"content_sha256":"cdd0b1d1b600703974499735455404a80b3d58fc0748e2f56b5ed248ef2b9700","schema_version":"1.0","event_id":"sha256:cdd0b1d1b600703974499735455404a80b3d58fc0748e2f56b5ed248ef2b9700"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2F5UQUT2UE77BAG2NCWBPYJRPW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Doping of graphene by a Au(111) substrate: Calculation strategy within the local density approximation and a semiempirical van der Waals approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"I. Zasada, J. Slawinska, P. Dabrowski","submitted_at":"2011-02-22T16:13:19Z","abstract_excerpt":"We have performed a density functional study of graphene adsorbed on Au(111) surface using both a local density approximation and a semiempirical van der Waals approach proposed by Grimme, known as the DFT-D2 method. Graphene physisorbed on metal has the linear dispersion preserved in the band-structure, but the Fermi level of the system is shifted with respect to the conical points which results in a doping effect. We show that the type and amount of doping depends not only on the choice of the exchange-correlation functional used in the calculations, but also on the supercell geometry that m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4543","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VZatoece8Ckht9KE0XjO3BuD28FcCXqNL2h2LtAwdxYNMR19+FblgjO+0eAtuHcGsoEx8FHB0B4Yjd65yERYBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T23:15:51.391130Z"},"content_sha256":"f295ab757fbf10010807bfacd108c0df8b5adc00101383d52dc24d375345fd9d","schema_version":"1.0","event_id":"sha256:f295ab757fbf10010807bfacd108c0df8b5adc00101383d52dc24d375345fd9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/bundle.json","state_url":"https://pith.science/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/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":"2026-06-05T23:15:51Z","links":{"resolver":"https://pith.science/pith/2F5UQUT2UE77BAG2NCWBPYJRPW","bundle":"https://pith.science/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/bundle.json","state":"https://pith.science/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2F5UQUT2UE77BAG2NCWBPYJRPW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2F5UQUT2UE77BAG2NCWBPYJRPW","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":"f54c5dbff3f03d453dca2ea98b019ff8862af11c315ced97310d80baaf79168c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-02-22T16:13:19Z","title_canon_sha256":"566b9327dcf6a2866fb778ae7120ead1eade121b53b993f785cc52c71b3e9d2f"},"schema_version":"1.0","source":{"id":"1102.4543","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4543","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4543v2","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4543","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"2F5UQUT2UE77","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2F5UQUT2UE77BAG2","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2F5UQUT2","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:f295ab757fbf10010807bfacd108c0df8b5adc00101383d52dc24d375345fd9d","target":"graph","created_at":"2026-05-18T02:03:06Z","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":"We have performed a density functional study of graphene adsorbed on Au(111) surface using both a local density approximation and a semiempirical van der Waals approach proposed by Grimme, known as the DFT-D2 method. Graphene physisorbed on metal has the linear dispersion preserved in the band-structure, but the Fermi level of the system is shifted with respect to the conical points which results in a doping effect. We show that the type and amount of doping depends not only on the choice of the exchange-correlation functional used in the calculations, but also on the supercell geometry that m","authors_text":"I. Zasada, J. Slawinska, P. Dabrowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-02-22T16:13:19Z","title":"Doping of graphene by a Au(111) substrate: Calculation strategy within the local density approximation and a semiempirical van der Waals approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4543","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:cdd0b1d1b600703974499735455404a80b3d58fc0748e2f56b5ed248ef2b9700","target":"record","created_at":"2026-05-18T02:03:06Z","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":"f54c5dbff3f03d453dca2ea98b019ff8862af11c315ced97310d80baaf79168c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-02-22T16:13:19Z","title_canon_sha256":"566b9327dcf6a2866fb778ae7120ead1eade121b53b993f785cc52c71b3e9d2f"},"schema_version":"1.0","source":{"id":"1102.4543","kind":"arxiv","version":2}},"canonical_sha256":"d17b48527aa13ff080da68ac17e1317daeacb01d90cae8832f40b5ff730fa0f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d17b48527aa13ff080da68ac17e1317daeacb01d90cae8832f40b5ff730fa0f2","first_computed_at":"2026-05-18T02:03:06.494175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:06.494175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GQtlgm85RsRgmzw8G7ASk6lMT9o7P8B8wRIfMUaxPxaR8BO5+7w4AQMJPE7di0XPFri2X5IKlsUcT31dYbBaDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:06.494677Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.4543","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdd0b1d1b600703974499735455404a80b3d58fc0748e2f56b5ed248ef2b9700","sha256:f295ab757fbf10010807bfacd108c0df8b5adc00101383d52dc24d375345fd9d"],"state_sha256":"c93787daa5930e45dde45b4b33ee4cecf39ce3fbf5d73f53d8cbf46d9ad2d179"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"taYRPcHi52evfHYtaRl9UehQHB0x2KxJ2GceIrDYqHD9GpFlk/sHhl/pjU6ak9JoqOXTzwbM4ZFr1buFYGEkCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T23:15:51.395590Z","bundle_sha256":"2b24a8b367891aa1c89194ea5d75e93eea8a949c6f9bcdb99f6a82418d5116af"}}