{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:C7GSSTM7KNSVA5D36FF2FUIU22","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":"a47451a1b5eb556cbef321494577ddfef3a77652c9c05942c5f16091c777a3bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-10T00:40:54Z","title_canon_sha256":"0f186bd01f7dd68ede87e75c08b74e1bf4449832546d9d24f9f932ce9f77f514"},"schema_version":"1.0","source":{"id":"1204.2017","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2017","created_at":"2026-05-18T01:57:55Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2017v2","created_at":"2026-05-18T01:57:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2017","created_at":"2026-05-18T01:57:55Z"},{"alias_kind":"pith_short_12","alias_value":"C7GSSTM7KNSV","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"C7GSSTM7KNSVA5D3","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"C7GSSTM7","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:d147fbd2b45fbc3d0e5e869afba9bfb1640586a4becab318299b4cce3e002b98","target":"graph","created_at":"2026-05-18T01:57:55Z","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":"By eliminating normal fabrication processes, we preserve the bulk insulating state of calcium-doped Bi2Se3 single crystals in suspended nanodevices, as indicated by the activated temperature dependence of the resistivity at low temperatures. We perform low-energy electron beam irradiation (<16 keV) and electrostatic gating to control the carrier density and therefore the Fermi level position in the nanodevices. In slightly p-doped Bi2-xCaxSe3 devices, continuous tuning of the Fermi level from the bulk valence band to the band-gap reveals dramatic enhancement (> a factor of 10) in the field-eff","authors_text":"Jing Shi, Peng Wei, Vivek Aji, Xinfei Liu, Zhiyong Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-10T00:40:54Z","title":"Field-effect mobility enhanced by tuning the Fermi level into the band gap of Bi2Se3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2017","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":"sha256:454bf16d125390fd2ae1eed63d3c1cf35bdbc4c776e0395f2ab3defa08d2c23a","target":"record","created_at":"2026-05-18T01:57:55Z","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":"a47451a1b5eb556cbef321494577ddfef3a77652c9c05942c5f16091c777a3bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-10T00:40:54Z","title_canon_sha256":"0f186bd01f7dd68ede87e75c08b74e1bf4449832546d9d24f9f932ce9f77f514"},"schema_version":"1.0","source":{"id":"1204.2017","kind":"arxiv","version":2}},"canonical_sha256":"17cd294d9f536550747bf14ba2d114d6bc6ae63fbd002439cc08606809a27b7c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17cd294d9f536550747bf14ba2d114d6bc6ae63fbd002439cc08606809a27b7c","first_computed_at":"2026-05-18T01:57:55.538992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:55.538992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hi3HMJrZXHg9bX9Cp0UQLX2feLC6cNUdgTlmkKud3vjKo3XtF1kp5qC9+RkxDKjyGI+sx9hWu8esdIduG177BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:55.539538Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.2017","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:454bf16d125390fd2ae1eed63d3c1cf35bdbc4c776e0395f2ab3defa08d2c23a","sha256:d147fbd2b45fbc3d0e5e869afba9bfb1640586a4becab318299b4cce3e002b98"],"state_sha256":"3c3c26993e8617286c514b1d63d65b05ece931ccf381103972bb81ef3b619345"}