{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VAVNRDZVFGE5NOG2ACOIQSSEGQ","short_pith_number":"pith:VAVNRDZV","canonical_record":{"source":{"id":"1912.07986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-17T13:03:37Z","cross_cats_sorted":[],"title_canon_sha256":"41b6b266c5400b3cd7f210d7447e5dfd3695a2529f0e70c063e4c197d45fa1bc","abstract_canon_sha256":"dade02f823109c46984a61e71ab65a1cdeb95dbd38c330bfadda04135648d168"},"schema_version":"1.0"},"canonical_sha256":"a82ad88f352989d6b8da009c884a443407edfd004d240a495d9d49c04e1a5f4b","source":{"kind":"arxiv","id":"1912.07986","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.07986","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"arxiv_version","alias_value":"1912.07986v2","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.07986","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_12","alias_value":"VAVNRDZVFGE5","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_16","alias_value":"VAVNRDZVFGE5NOG2","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_8","alias_value":"VAVNRDZV","created_at":"2026-07-05T00:51:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VAVNRDZVFGE5NOG2ACOIQSSEGQ","target":"record","payload":{"canonical_record":{"source":{"id":"1912.07986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-17T13:03:37Z","cross_cats_sorted":[],"title_canon_sha256":"41b6b266c5400b3cd7f210d7447e5dfd3695a2529f0e70c063e4c197d45fa1bc","abstract_canon_sha256":"dade02f823109c46984a61e71ab65a1cdeb95dbd38c330bfadda04135648d168"},"schema_version":"1.0"},"canonical_sha256":"a82ad88f352989d6b8da009c884a443407edfd004d240a495d9d49c04e1a5f4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:51:05.632421Z","signature_b64":"pD9Q+D9hiz8TjyND0AGJwrW27+8YUDxdMkk8SVTxhl1tXS1iEKQzclgqOvVlFr+25w9vWhYfvQt/YOJvP+koDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a82ad88f352989d6b8da009c884a443407edfd004d240a495d9d49c04e1a5f4b","last_reissued_at":"2026-07-05T00:51:05.631960Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:51:05.631960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.07986","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":"2026-07-05T00:51:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w9dsaRZsPot+U3dUeaHxHliGtPnUGdK8oTuYDBTeIP9Vupo2gUsOup6H/3QTzifu8DrwiZxL7rAQ/ZOhyB+YBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T02:57:13.033489Z"},"content_sha256":"4feef7e343fb025b49e4992302f3416f9668e82bae16dc98d153249951dade1d","schema_version":"1.0","event_id":"sha256:4feef7e343fb025b49e4992302f3416f9668e82bae16dc98d153249951dade1d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VAVNRDZVFGE5NOG2ACOIQSSEGQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancement of electron transport and bandgap opening in graphene induced by adsorbates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Ai-Min Guo, Fangping Ouyang, Lan Chen, Qing-Feng Sun, Songshan Ma, Tie-Feng Fang","submitted_at":"2019-12-17T13:03:37Z","abstract_excerpt":"Impurities are unavoidable during the preparation of graphene samples and play an important role in graphene's electronic properties when they are adsorbed on graphene surface. In this work, we study the electronic structures and transport properties of a two-terminal zigzag graphene nanoribbon (ZGNR) device whose scattering region is covered by various adsorbates within the framework of the tight-binding approximation, by taking into account the coupling strength $\\gamma$ between adsorbates and carbon atoms, the adsorbate concentration $n_i$, and the on-site energy disorder of adsorbates. Our"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.07986","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.07986/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:51:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oSAxUMDnjVO8HR3Aj17ANya6dFBcw5EDRDnYAO8cx2LflApreZZQ4jW8NsJaeQgkbl4AMlTKFFxS8NwM92EVBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T02:57:13.033866Z"},"content_sha256":"cd241cfe1012f4fe8f1f4ea0b8028594e0946eb020eac7e9e3498c57df8454d9","schema_version":"1.0","event_id":"sha256:cd241cfe1012f4fe8f1f4ea0b8028594e0946eb020eac7e9e3498c57df8454d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/bundle.json","state_url":"https://pith.science/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/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":"2026-07-22T02:57:13Z","links":{"resolver":"https://pith.science/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ","bundle":"https://pith.science/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/bundle.json","state":"https://pith.science/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VAVNRDZVFGE5NOG2ACOIQSSEGQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VAVNRDZVFGE5NOG2ACOIQSSEGQ","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":"dade02f823109c46984a61e71ab65a1cdeb95dbd38c330bfadda04135648d168","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-17T13:03:37Z","title_canon_sha256":"41b6b266c5400b3cd7f210d7447e5dfd3695a2529f0e70c063e4c197d45fa1bc"},"schema_version":"1.0","source":{"id":"1912.07986","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.07986","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"arxiv_version","alias_value":"1912.07986v2","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.07986","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_12","alias_value":"VAVNRDZVFGE5","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_16","alias_value":"VAVNRDZVFGE5NOG2","created_at":"2026-07-05T00:51:05Z"},{"alias_kind":"pith_short_8","alias_value":"VAVNRDZV","created_at":"2026-07-05T00:51:05Z"}],"graph_snapshots":[{"event_id":"sha256:cd241cfe1012f4fe8f1f4ea0b8028594e0946eb020eac7e9e3498c57df8454d9","target":"graph","created_at":"2026-07-05T00:51:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1912.07986/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Impurities are unavoidable during the preparation of graphene samples and play an important role in graphene's electronic properties when they are adsorbed on graphene surface. In this work, we study the electronic structures and transport properties of a two-terminal zigzag graphene nanoribbon (ZGNR) device whose scattering region is covered by various adsorbates within the framework of the tight-binding approximation, by taking into account the coupling strength $\\gamma$ between adsorbates and carbon atoms, the adsorbate concentration $n_i$, and the on-site energy disorder of adsorbates. Our","authors_text":"Ai-Min Guo, Fangping Ouyang, Lan Chen, Qing-Feng Sun, Songshan Ma, Tie-Feng Fang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-17T13:03:37Z","title":"Enhancement of electron transport and bandgap opening in graphene induced by adsorbates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.07986","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":"sha256:4feef7e343fb025b49e4992302f3416f9668e82bae16dc98d153249951dade1d","target":"record","created_at":"2026-07-05T00:51:05Z","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":"dade02f823109c46984a61e71ab65a1cdeb95dbd38c330bfadda04135648d168","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-17T13:03:37Z","title_canon_sha256":"41b6b266c5400b3cd7f210d7447e5dfd3695a2529f0e70c063e4c197d45fa1bc"},"schema_version":"1.0","source":{"id":"1912.07986","kind":"arxiv","version":2}},"canonical_sha256":"a82ad88f352989d6b8da009c884a443407edfd004d240a495d9d49c04e1a5f4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a82ad88f352989d6b8da009c884a443407edfd004d240a495d9d49c04e1a5f4b","first_computed_at":"2026-07-05T00:51:05.631960Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:51:05.631960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pD9Q+D9hiz8TjyND0AGJwrW27+8YUDxdMkk8SVTxhl1tXS1iEKQzclgqOvVlFr+25w9vWhYfvQt/YOJvP+koDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:51:05.632421Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.07986","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4feef7e343fb025b49e4992302f3416f9668e82bae16dc98d153249951dade1d","sha256:cd241cfe1012f4fe8f1f4ea0b8028594e0946eb020eac7e9e3498c57df8454d9"],"state_sha256":"3578e04eba380e82aec96ed03a4e42295e43a1bd171cb2f779d768c7ba14d9ba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JntzY8frXg9nuxWMxj0F3I6ShgvdVa7cuv7aRnunUQCqfwefOVDILche+RBHSKYGyEP7mM4MiLflOGWWCVTsCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T02:57:13.035986Z","bundle_sha256":"0fee57e213cb85614ed59f5f088bd4486e8bbdc51d22721b8a7a7fda4195267e"}}