{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:47Z2SNPZDAEQHERGIEWSQ5OXKX","short_pith_number":"pith:47Z2SNPZ","schema_version":"1.0","canonical_sha256":"e7f3a935f91809039226412d2875d755dc5d4deb0cee1e670d2732a3736c1648","source":{"kind":"arxiv","id":"1003.3883","version":2},"attestation_state":"computed","paper":{"title":"Bulk Band Gap and Surface State Conduction Observed in Voltage-Tuned Crystals of the Topological Insulator Bi$_2$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"J. G. Checkelsky, N. P. Ong, R. J. Cava, Y. S. Hor","submitted_at":"2010-03-19T20:19:44Z","abstract_excerpt":"We report a transport study of exfoliated few monolayer crystals of topological insulator Bi$_2$Se$_3$ in an electric field effect (EFE) geometry. By doping the bulk crystals with Ca, we are able to fabricate devices with sufficiently low bulk carrier density to change the sign of the Hall density with the gate voltage $V_g$. We find that the temperature $T$ and magnetic field dependent transport properties in the vicinity of this $V_g$ can be explained by a bulk channel with activation gap of approximately 50 meV and a relatively high mobility metallic channel that dominates at low $T$. The c"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1003.3883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-19T20:19:44Z","cross_cats_sorted":[],"title_canon_sha256":"00d7447299d8e77d6913d97a074dbb21eed3162cb06ee9a39e7adb225588fef4","abstract_canon_sha256":"1b2e5be6267f0f4c52a0f4e195239b56f7bd96f125c5cf60d26e6ef24b8f5e17"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:43.832217Z","signature_b64":"rTbFCObWwXPJqVND+yi0IdtML3QuYuoet2Aekdi8AVwUD7zMBI+9VZZKCUDTj4CGrsjGWqp0bIZS0hOu5kgeCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7f3a935f91809039226412d2875d755dc5d4deb0cee1e670d2732a3736c1648","last_reissued_at":"2026-05-18T04:19:43.831743Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:43.831743Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bulk Band Gap and Surface State Conduction Observed in Voltage-Tuned Crystals of the Topological Insulator Bi$_2$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"J. G. Checkelsky, N. P. Ong, R. J. Cava, Y. S. Hor","submitted_at":"2010-03-19T20:19:44Z","abstract_excerpt":"We report a transport study of exfoliated few monolayer crystals of topological insulator Bi$_2$Se$_3$ in an electric field effect (EFE) geometry. By doping the bulk crystals with Ca, we are able to fabricate devices with sufficiently low bulk carrier density to change the sign of the Hall density with the gate voltage $V_g$. We find that the temperature $T$ and magnetic field dependent transport properties in the vicinity of this $V_g$ can be explained by a bulk channel with activation gap of approximately 50 meV and a relatively high mobility metallic channel that dominates at low $T$. The c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3883","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1003.3883","created_at":"2026-05-18T04:19:43.831810+00:00"},{"alias_kind":"arxiv_version","alias_value":"1003.3883v2","created_at":"2026-05-18T04:19:43.831810+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.3883","created_at":"2026-05-18T04:19:43.831810+00:00"},{"alias_kind":"pith_short_12","alias_value":"47Z2SNPZDAEQ","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_16","alias_value":"47Z2SNPZDAEQHERG","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_8","alias_value":"47Z2SNPZ","created_at":"2026-05-18T12:26:03.138858+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX","json":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX.json","graph_json":"https://pith.science/api/pith-number/47Z2SNPZDAEQHERGIEWSQ5OXKX/graph.json","events_json":"https://pith.science/api/pith-number/47Z2SNPZDAEQHERGIEWSQ5OXKX/events.json","paper":"https://pith.science/paper/47Z2SNPZ"},"agent_actions":{"view_html":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX","download_json":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX.json","view_paper":"https://pith.science/paper/47Z2SNPZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1003.3883&json=true","fetch_graph":"https://pith.science/api/pith-number/47Z2SNPZDAEQHERGIEWSQ5OXKX/graph.json","fetch_events":"https://pith.science/api/pith-number/47Z2SNPZDAEQHERGIEWSQ5OXKX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX/action/storage_attestation","attest_author":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX/action/author_attestation","sign_citation":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX/action/citation_signature","submit_replication":"https://pith.science/pith/47Z2SNPZDAEQHERGIEWSQ5OXKX/action/replication_record"}},"created_at":"2026-05-18T04:19:43.831810+00:00","updated_at":"2026-05-18T04:19:43.831810+00:00"}