{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:WSVVT43V2TY4Y4V5DW6EM5HIM2","short_pith_number":"pith:WSVVT43V","schema_version":"1.0","canonical_sha256":"b4ab59f375d4f1cc72bd1dbc4674e866b1e492b246513a1dc066361f13db8dd5","source":{"kind":"arxiv","id":"1507.03916","version":1},"attestation_state":"computed","paper":{"title":"Engineering two-dimensional electron gases at the (001) and (101) surfaces of TiO2 anatase using light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. F. Santander-Syro, F. Bertran, F. Fortuna, M. Gabay, M. J. Rozenberg, P. Le F\\`evre, T. C. R\\\"odel","submitted_at":"2015-07-14T16:39:05Z","abstract_excerpt":"We report the existence of metallic two-dimensional electron gases (2DEGs) at the (001) and (101) surfaces of bulk-insulating TiO2 anatase due to local chemical doping by oxygen vacancies in the near-surface region. Using angle-resolved photoemission spectroscopy, we find that the electronic structure at both surfaces is composed of two occupied subbands of d_xy orbital character. While the Fermi surface observed at the (001) termination is isotropic, the 2DEG at the (101) termination is anisotropic and shows a charge carrier density three times larger than at the (001) surface. Moreover, we d"},"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":"1507.03916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-14T16:39:05Z","cross_cats_sorted":[],"title_canon_sha256":"bf86656195277f5c8e6c31988e98b3a878713c0e81dc287349d1d53e495f40c0","abstract_canon_sha256":"9270360a4060e49fe781d194a903aa1f9251f6ef5c94c5effcd34892954e7a7f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:52.243154Z","signature_b64":"mzvTShJWBw+TrY1sTza2ED38C49KrpNF1+lds6lTNpnB5g46M8Ua+w+Ztrkcqgl3tqwVNQzChfWYiXFPrwSLCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4ab59f375d4f1cc72bd1dbc4674e866b1e492b246513a1dc066361f13db8dd5","last_reissued_at":"2026-05-18T01:36:52.242351Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:52.242351Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Engineering two-dimensional electron gases at the (001) and (101) surfaces of TiO2 anatase using light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. F. Santander-Syro, F. Bertran, F. Fortuna, M. Gabay, M. J. Rozenberg, P. Le F\\`evre, T. C. R\\\"odel","submitted_at":"2015-07-14T16:39:05Z","abstract_excerpt":"We report the existence of metallic two-dimensional electron gases (2DEGs) at the (001) and (101) surfaces of bulk-insulating TiO2 anatase due to local chemical doping by oxygen vacancies in the near-surface region. Using angle-resolved photoemission spectroscopy, we find that the electronic structure at both surfaces is composed of two occupied subbands of d_xy orbital character. While the Fermi surface observed at the (001) termination is isotropic, the 2DEG at the (101) termination is anisotropic and shows a charge carrier density three times larger than at the (001) surface. Moreover, we d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.03916","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":"1507.03916","created_at":"2026-05-18T01:36:52.242482+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.03916v1","created_at":"2026-05-18T01:36:52.242482+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.03916","created_at":"2026-05-18T01:36:52.242482+00:00"},{"alias_kind":"pith_short_12","alias_value":"WSVVT43V2TY4","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_16","alias_value":"WSVVT43V2TY4Y4V5","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_8","alias_value":"WSVVT43V","created_at":"2026-05-18T12:29:47.479230+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/WSVVT43V2TY4Y4V5DW6EM5HIM2","json":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2.json","graph_json":"https://pith.science/api/pith-number/WSVVT43V2TY4Y4V5DW6EM5HIM2/graph.json","events_json":"https://pith.science/api/pith-number/WSVVT43V2TY4Y4V5DW6EM5HIM2/events.json","paper":"https://pith.science/paper/WSVVT43V"},"agent_actions":{"view_html":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2","download_json":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2.json","view_paper":"https://pith.science/paper/WSVVT43V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.03916&json=true","fetch_graph":"https://pith.science/api/pith-number/WSVVT43V2TY4Y4V5DW6EM5HIM2/graph.json","fetch_events":"https://pith.science/api/pith-number/WSVVT43V2TY4Y4V5DW6EM5HIM2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2/action/storage_attestation","attest_author":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2/action/author_attestation","sign_citation":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2/action/citation_signature","submit_replication":"https://pith.science/pith/WSVVT43V2TY4Y4V5DW6EM5HIM2/action/replication_record"}},"created_at":"2026-05-18T01:36:52.242482+00:00","updated_at":"2026-05-18T01:36:52.242482+00:00"}