{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:CBJ2T5IPAPNDKZJ4CCUHXQ4G5P","short_pith_number":"pith:CBJ2T5IP","canonical_record":{"source":{"id":"0811.0565","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-11-03T22:47:23Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1bd5514a337e95179c2d9c6f600b503e0f3b4a103ded85acc4809f57bd7b0b7f","abstract_canon_sha256":"8a07f9904408c5f7ec1428b701e44981b71bb149f539f4ed0d2a73534a063d55"},"schema_version":"1.0"},"canonical_sha256":"1053a9f50f03da35653c10a87bc386ebf85580d7541ffa14da0722b2e61a5be1","source":{"kind":"arxiv","id":"0811.0565","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.0565","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"arxiv_version","alias_value":"0811.0565v2","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.0565","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_12","alias_value":"CBJ2T5IPAPND","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_16","alias_value":"CBJ2T5IPAPNDKZJ4","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_8","alias_value":"CBJ2T5IP","created_at":"2026-07-04T15:35:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:CBJ2T5IPAPNDKZJ4CCUHXQ4G5P","target":"record","payload":{"canonical_record":{"source":{"id":"0811.0565","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-11-03T22:47:23Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1bd5514a337e95179c2d9c6f600b503e0f3b4a103ded85acc4809f57bd7b0b7f","abstract_canon_sha256":"8a07f9904408c5f7ec1428b701e44981b71bb149f539f4ed0d2a73534a063d55"},"schema_version":"1.0"},"canonical_sha256":"1053a9f50f03da35653c10a87bc386ebf85580d7541ffa14da0722b2e61a5be1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:35:21.107964Z","signature_b64":"4ap5lQOWr8szgv+BDJ9kfRdjg1bb9V9Ep0ejoDP8+fKFUiLTuJk9iIqdtTvh3rWO/BhtIT9efPlYs5tqJy7hAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1053a9f50f03da35653c10a87bc386ebf85580d7541ffa14da0722b2e61a5be1","last_reissued_at":"2026-07-04T15:35:21.107578Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:35:21.107578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.0565","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":"2026-07-04T15:35:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4QSkHDNFTIAHa8RZ2lJ2D09AmKrm8JN0OWxDNkoM8FNGrs71sjjOJwsOAWJeCPV0HE7S1GtmescjS28gpHqJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T05:57:27.075146Z"},"content_sha256":"085047958d9b90d0a9cb3ba4a9fe304b55f0c8965d8fc921f550358fb7da2340","schema_version":"1.0","event_id":"sha256:085047958d9b90d0a9cb3ba4a9fe304b55f0c8965d8fc921f550358fb7da2340"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:CBJ2T5IPAPNDKZJ4CCUHXQ4G5P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum dot behavior in graphene nanoconstrictions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"David Goldhaber-Gordon, Hung-Tao Chou, Kathryn Todd, Sami Amasha","submitted_at":"2008-11-03T22:47:23Z","abstract_excerpt":"Graphene nanoribbons display an imperfectly understood transport gap. We measure transport through nanoribbon devices of several lengths. In nanoribbons of length greater than or equal to 250 nm we observe transport through multiple quantum dots in series, while shorter constrictions of length less than or equal to 60 nm display behavior characteristic of single and double quantum dots. Dot size scales with constriction width. We propose a model where transport occurs through quantum dots that are nucleated by background disorder potentials in the presence of a confinement gap."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.0565","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/0811.0565/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":"2026-07-04T15:35:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cll/E+KK8xlR18EiYuMVynQzmgMbLLoN5Fv5JLA3MWqfagxzri2ZnW8bTGRXs57CHqNB0ds/y6syrrOC8QdaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T05:57:27.076083Z"},"content_sha256":"eea5d261f804df22973813293d57ad3519913ca9bc050fc4e600f3540dc4c537","schema_version":"1.0","event_id":"sha256:eea5d261f804df22973813293d57ad3519913ca9bc050fc4e600f3540dc4c537"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/bundle.json","state_url":"https://pith.science/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/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":"2026-08-12T05:57:27Z","links":{"resolver":"https://pith.science/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P","bundle":"https://pith.science/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/bundle.json","state":"https://pith.science/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CBJ2T5IPAPNDKZJ4CCUHXQ4G5P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:CBJ2T5IPAPNDKZJ4CCUHXQ4G5P","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":"8a07f9904408c5f7ec1428b701e44981b71bb149f539f4ed0d2a73534a063d55","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-11-03T22:47:23Z","title_canon_sha256":"1bd5514a337e95179c2d9c6f600b503e0f3b4a103ded85acc4809f57bd7b0b7f"},"schema_version":"1.0","source":{"id":"0811.0565","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.0565","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"arxiv_version","alias_value":"0811.0565v2","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.0565","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_12","alias_value":"CBJ2T5IPAPND","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_16","alias_value":"CBJ2T5IPAPNDKZJ4","created_at":"2026-07-04T15:35:21Z"},{"alias_kind":"pith_short_8","alias_value":"CBJ2T5IP","created_at":"2026-07-04T15:35:21Z"}],"graph_snapshots":[{"event_id":"sha256:eea5d261f804df22973813293d57ad3519913ca9bc050fc4e600f3540dc4c537","target":"graph","created_at":"2026-07-04T15:35:21Z","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/0811.0565/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Graphene nanoribbons display an imperfectly understood transport gap. We measure transport through nanoribbon devices of several lengths. In nanoribbons of length greater than or equal to 250 nm we observe transport through multiple quantum dots in series, while shorter constrictions of length less than or equal to 60 nm display behavior characteristic of single and double quantum dots. Dot size scales with constriction width. We propose a model where transport occurs through quantum dots that are nucleated by background disorder potentials in the presence of a confinement gap.","authors_text":"David Goldhaber-Gordon, Hung-Tao Chou, Kathryn Todd, Sami Amasha","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-11-03T22:47:23Z","title":"Quantum dot behavior in graphene nanoconstrictions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.0565","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":"sha256:085047958d9b90d0a9cb3ba4a9fe304b55f0c8965d8fc921f550358fb7da2340","target":"record","created_at":"2026-07-04T15:35:21Z","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":"8a07f9904408c5f7ec1428b701e44981b71bb149f539f4ed0d2a73534a063d55","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-11-03T22:47:23Z","title_canon_sha256":"1bd5514a337e95179c2d9c6f600b503e0f3b4a103ded85acc4809f57bd7b0b7f"},"schema_version":"1.0","source":{"id":"0811.0565","kind":"arxiv","version":2}},"canonical_sha256":"1053a9f50f03da35653c10a87bc386ebf85580d7541ffa14da0722b2e61a5be1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1053a9f50f03da35653c10a87bc386ebf85580d7541ffa14da0722b2e61a5be1","first_computed_at":"2026-07-04T15:35:21.107578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:35:21.107578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4ap5lQOWr8szgv+BDJ9kfRdjg1bb9V9Ep0ejoDP8+fKFUiLTuJk9iIqdtTvh3rWO/BhtIT9efPlYs5tqJy7hAA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:35:21.107964Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.0565","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:085047958d9b90d0a9cb3ba4a9fe304b55f0c8965d8fc921f550358fb7da2340","sha256:eea5d261f804df22973813293d57ad3519913ca9bc050fc4e600f3540dc4c537"],"state_sha256":"01704217595f1245952aef04835d5c65d4919af72b780729e0fc6e36b421e4b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kwb35kbO2/7W7o0Vt6iNZtBVjQAwLRYUxoNTSidJw7QKU0qCQM4dgWcIpgTAfl7nUpudVFAiMY6X1luyjN9LDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T05:57:27.082417Z","bundle_sha256":"d012042f862f6c65bfeee97707daa915fd3e279ae186a6743e9a7499290d089d"}}