{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZT5XSMJLRZC4ALCUOLA3Q63GFR","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":"dc9b5f5ccd9d160e9eb81474d87af1d39b205563742d5b243909d0e985c6e9e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-26T13:36:15Z","title_canon_sha256":"23674aea7efd659bb5d4c8fa81c7d0cc3499ed1784b36d7731ed09b016226988"},"schema_version":"1.0","source":{"id":"0908.3822","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.3822","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"arxiv_version","alias_value":"0908.3822v3","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.3822","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"pith_short_12","alias_value":"ZT5XSMJLRZC4","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZT5XSMJLRZC4ALCU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZT5XSMJL","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:f27bc8de935f5c7d9c991ca7d22274fe9310163acea4035446e9c00724bc9f35","target":"graph","created_at":"2026-05-18T02:12:22Z","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":"Epitaxial graphene films were formed on the Si-face of semi-insulating 4H-SiC substrates by a high temperature sublimation process. A high-k gate stack on epitaxial graphene is realized by inserting a fully oxidized nanometer thin aluminum film as a seeding layer followed by an atomic-layer deposition process. The electrical properties of epitaxial graphene films are sustained after gate stack formation without significant degradation. At low temperatures, the quantum-Hall effect in Hall resistance is observed along with pronounced Shubnikov-de Hass oscillations in diagonal magneto-resistance ","authors_text":"J.J. Gu, L.W. Engel, M.A. Capano, M.L. Bolen, M. Xu, P.D. Ye, T. Shen, Y.Q. Wu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-26T13:36:15Z","title":"Observation of quantum-Hall effect in gated epitaxial graphene grown on SiC (0001)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.3822","kind":"arxiv","version":3},"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:f95e9e1bc1ea15554bd849047215a57dd547dc160c2777e24d285fee4cb964b0","target":"record","created_at":"2026-05-18T02:12:22Z","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":"dc9b5f5ccd9d160e9eb81474d87af1d39b205563742d5b243909d0e985c6e9e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-26T13:36:15Z","title_canon_sha256":"23674aea7efd659bb5d4c8fa81c7d0cc3499ed1784b36d7731ed09b016226988"},"schema_version":"1.0","source":{"id":"0908.3822","kind":"arxiv","version":3}},"canonical_sha256":"ccfb79312b8e45c02c5472c1b87b662c5d334f56bd67c879f097e63f6ca9e266","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ccfb79312b8e45c02c5472c1b87b662c5d334f56bd67c879f097e63f6ca9e266","first_computed_at":"2026-05-18T02:12:22.695594Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:22.695594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ynAnqM0YN6Ka10EpDGYy/nduVS38crWVuog11B7P4NfyGQSi/zKC1FWWchRoPzL0tIe3/QlZ5zgF8F3S79QAAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:22.696434Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.3822","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f95e9e1bc1ea15554bd849047215a57dd547dc160c2777e24d285fee4cb964b0","sha256:f27bc8de935f5c7d9c991ca7d22274fe9310163acea4035446e9c00724bc9f35"],"state_sha256":"4521ff967676477bd5a9cb64d4f2a8385bc4c92f0fb443b50dabb7aa2514449e"}