{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:NYAQEFOSSKMV7KKC2M2S72RXWG","short_pith_number":"pith:NYAQEFOS","schema_version":"1.0","canonical_sha256":"6e010215d292995fa942d3352fea37b1a08e2731d4ac57c564c4c43be1afe49b","source":{"kind":"arxiv","id":"1508.05523","version":1},"attestation_state":"computed","paper":{"title":"Observation of tunable bandgap and anisotropic Dirac semimetal state in black phosphorus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Byeong-Gyu Park, Hyoung Joon Choi, Jimin Kim, Jonathan Denlinger, Keun Su Kim, Sae Hee Ryu, Seung Su Baik, Soohyung Park, Yeongsup Sohn, Yeonjin Yi","submitted_at":"2015-08-22T16:35:51Z","abstract_excerpt":"Black phosphorus consists of stacked layers of phosphorene, a two-dimensional semiconductor with promising device characteristics. We report the realization of a widely tunable bandgap in few-layer black phosphorus doped with potassium using an in-situ surface doping technique. Through band-structure measurements and calculations, we demonstrate that a vertical electric field from dopants modulates the bandgap owing to the giant Stark effect and tunes the material from a moderate-gap semiconductor to a band-inverted semimetal. At the critical field of this band inversion, the material becomes "},"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":"1508.05523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-08-22T16:35:51Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"dde5c11f776902cf1db4288277132aa2314be1256a0cd705a6283b149963e7f2","abstract_canon_sha256":"9f50b34e5c6680a907e925c60f9166a78dd7765f3b52a620e872e5af334b076e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:34:52.299243Z","signature_b64":"YALRNnbFLenVuKJlwJbEQ7bF4Om71UnWgUD0DJRNl041F3cYBNdd+EY9Xsa2X3JMO8r6c8WS2YptAEsYI0g1AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e010215d292995fa942d3352fea37b1a08e2731d4ac57c564c4c43be1afe49b","last_reissued_at":"2026-05-18T01:34:52.298700Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:34:52.298700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of tunable bandgap and anisotropic Dirac semimetal state in black phosphorus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Byeong-Gyu Park, Hyoung Joon Choi, Jimin Kim, Jonathan Denlinger, Keun Su Kim, Sae Hee Ryu, Seung Su Baik, Soohyung Park, Yeongsup Sohn, Yeonjin Yi","submitted_at":"2015-08-22T16:35:51Z","abstract_excerpt":"Black phosphorus consists of stacked layers of phosphorene, a two-dimensional semiconductor with promising device characteristics. We report the realization of a widely tunable bandgap in few-layer black phosphorus doped with potassium using an in-situ surface doping technique. Through band-structure measurements and calculations, we demonstrate that a vertical electric field from dopants modulates the bandgap owing to the giant Stark effect and tunes the material from a moderate-gap semiconductor to a band-inverted semimetal. At the critical field of this band inversion, the material becomes "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.05523","kind":"arxiv","version":1},"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":"1508.05523","created_at":"2026-05-18T01:34:52.298780+00:00"},{"alias_kind":"arxiv_version","alias_value":"1508.05523v1","created_at":"2026-05-18T01:34:52.298780+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.05523","created_at":"2026-05-18T01:34:52.298780+00:00"},{"alias_kind":"pith_short_12","alias_value":"NYAQEFOSSKMV","created_at":"2026-05-18T12:29:34.919912+00:00"},{"alias_kind":"pith_short_16","alias_value":"NYAQEFOSSKMV7KKC","created_at":"2026-05-18T12:29:34.919912+00:00"},{"alias_kind":"pith_short_8","alias_value":"NYAQEFOS","created_at":"2026-05-18T12:29:34.919912+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/NYAQEFOSSKMV7KKC2M2S72RXWG","json":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG.json","graph_json":"https://pith.science/api/pith-number/NYAQEFOSSKMV7KKC2M2S72RXWG/graph.json","events_json":"https://pith.science/api/pith-number/NYAQEFOSSKMV7KKC2M2S72RXWG/events.json","paper":"https://pith.science/paper/NYAQEFOS"},"agent_actions":{"view_html":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG","download_json":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG.json","view_paper":"https://pith.science/paper/NYAQEFOS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1508.05523&json=true","fetch_graph":"https://pith.science/api/pith-number/NYAQEFOSSKMV7KKC2M2S72RXWG/graph.json","fetch_events":"https://pith.science/api/pith-number/NYAQEFOSSKMV7KKC2M2S72RXWG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG/action/storage_attestation","attest_author":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG/action/author_attestation","sign_citation":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG/action/citation_signature","submit_replication":"https://pith.science/pith/NYAQEFOSSKMV7KKC2M2S72RXWG/action/replication_record"}},"created_at":"2026-05-18T01:34:52.298780+00:00","updated_at":"2026-05-18T01:34:52.298780+00:00"}