{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:3MR6UD3YZCTXUUNBTMFUII55VO","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":"77a8cc963b9a559acd70f465782089e37568789ea235e375ea02270c14ac61e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-22T09:46:03Z","title_canon_sha256":"34cb2b65543555be461a46314f92e58e882548f9e7ab5d82ecd4e6af8c61af7f"},"schema_version":"1.0","source":{"id":"1405.5692","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.5692","created_at":"2026-05-18T02:39:00Z"},{"alias_kind":"arxiv_version","alias_value":"1405.5692v1","created_at":"2026-05-18T02:39:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.5692","created_at":"2026-05-18T02:39:00Z"},{"alias_kind":"pith_short_12","alias_value":"3MR6UD3YZCTX","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3MR6UD3YZCTXUUNB","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3MR6UD3Y","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:10dd97c2eb204b687dad594c24d28e020c2dd09c77ff5ce157e23a42aac62188","target":"graph","created_at":"2026-05-18T02:39:00Z","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":"Bismuth selenide Bi$_2$Se$_3$ was grown by molecular beam epitaxy while carrier density and mobility were measured directly \\emph{in situ} as a function of film thickness. Carrier density shows high interface n-doping (1.5 x 10$^{13}$ cm$^{-2}$) at the onset of film conduction, and bulk dopant density of $\\sim$5 x 10$^{18}$ cm$^{-3}$, roughly independent of growth temperature profile. Mobility depends more strongly on the growth temperature and is related to the crystalline quality of the samples quantified by \\emph{ex-situ} AFM measurements. These results indicate that Bi$_2$Se$_3$ as prepare","authors_text":"C. X. Zheng, Jack Hellerstedt, J. H. Chen, Mark Edmonds, Michael S. Fuhrer, William G. Cullen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-22T09:46:03Z","title":"Thickness and growth-condition dependence of \\emph{in-situ} mobility and carrier density of epitaxial thin-film Bi$_2$Se$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.5692","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":"sha256:83ddc93ca6c3ac49992f1b598b44c65400f2ab47bd4da99ef7a8ab07138c4eff","target":"record","created_at":"2026-05-18T02:39:00Z","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":"77a8cc963b9a559acd70f465782089e37568789ea235e375ea02270c14ac61e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-05-22T09:46:03Z","title_canon_sha256":"34cb2b65543555be461a46314f92e58e882548f9e7ab5d82ecd4e6af8c61af7f"},"schema_version":"1.0","source":{"id":"1405.5692","kind":"arxiv","version":1}},"canonical_sha256":"db23ea0f78c8a77a51a19b0b4423bdabac2e5baece6671db5148970832d82324","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db23ea0f78c8a77a51a19b0b4423bdabac2e5baece6671db5148970832d82324","first_computed_at":"2026-05-18T02:39:00.895273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:00.895273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"myT3aiD/Uxwqlxp8TAhjM5eNAgOM//Xh2YTocEO5gxg9l4LUXvj1jCfk45CQ8Uqw/0B1L7/jK62bbdllwC1jAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:00.895930Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.5692","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83ddc93ca6c3ac49992f1b598b44c65400f2ab47bd4da99ef7a8ab07138c4eff","sha256:10dd97c2eb204b687dad594c24d28e020c2dd09c77ff5ce157e23a42aac62188"],"state_sha256":"410531251d6c060934330657e302a4cfd22a3bc80bc6e5f13acf7b90a4560fa9"}