{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:IDDQEDSOZTUA3S3WLUYKKKJ475","short_pith_number":"pith:IDDQEDSO","schema_version":"1.0","canonical_sha256":"40c7020e4ecce80dcb765d30a5293cff4cbe0a7534b8b22bb3979942889b6691","source":{"kind":"arxiv","id":"1104.3388","version":2},"attestation_state":"computed","paper":{"title":"Fermi surface and superconductivity in low-density high-mobility {\\delta}-doped SrTiO3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"C. Bell, H. Y. Hwang, M. Kim, M. Kurita, Y. Hikita, Y. Kozuka","submitted_at":"2011-04-18T05:47:17Z","abstract_excerpt":"The electronic structure of low-density n-type SrTiO3 delta-doped heterostructures is investigated by angular dependent Shubnikov-de Haas oscillations. In addition to a controllable crossover from a three- to two-dimensional Fermi surface, clear beating patterns for decreasing dopant layer thicknesses are found. These indicate the lifting of the degeneracy of the conduction band due to subband quantization in the two-dimensional limit. Analysis of the temperature-dependent oscillations shows that similar effective masses are found for all components, associated with the splitting of the light "},"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":"1104.3388","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-04-18T05:47:17Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"ea8a1ea11677887420363034e84c63c33bd88fd0536c3ce36c912c46ce4ee10b","abstract_canon_sha256":"04ea320b8733d5a598d34e56e55a33d66a6e751664c0d12213c0f6059efe4141"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:23.864691Z","signature_b64":"RNCmxYpL43o2msGPNTWbhFaiQPgKQLfdDG+Dk9fO9N0X04TA8QW74bzHcS2FxXJvimAMMLmdS1Yay9t7laj2Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40c7020e4ecce80dcb765d30a5293cff4cbe0a7534b8b22bb3979942889b6691","last_reissued_at":"2026-05-18T02:02:23.863802Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:23.863802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Fermi surface and superconductivity in low-density high-mobility {\\delta}-doped SrTiO3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"C. Bell, H. Y. Hwang, M. Kim, M. Kurita, Y. Hikita, Y. Kozuka","submitted_at":"2011-04-18T05:47:17Z","abstract_excerpt":"The electronic structure of low-density n-type SrTiO3 delta-doped heterostructures is investigated by angular dependent Shubnikov-de Haas oscillations. In addition to a controllable crossover from a three- to two-dimensional Fermi surface, clear beating patterns for decreasing dopant layer thicknesses are found. These indicate the lifting of the degeneracy of the conduction band due to subband quantization in the two-dimensional limit. Analysis of the temperature-dependent oscillations shows that similar effective masses are found for all components, associated with the splitting of the light "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.3388","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":"1104.3388","created_at":"2026-05-18T02:02:23.863946+00:00"},{"alias_kind":"arxiv_version","alias_value":"1104.3388v2","created_at":"2026-05-18T02:02:23.863946+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.3388","created_at":"2026-05-18T02:02:23.863946+00:00"},{"alias_kind":"pith_short_12","alias_value":"IDDQEDSOZTUA","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"IDDQEDSOZTUA3S3W","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"IDDQEDSO","created_at":"2026-05-18T12:26:30.835961+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/IDDQEDSOZTUA3S3WLUYKKKJ475","json":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475.json","graph_json":"https://pith.science/api/pith-number/IDDQEDSOZTUA3S3WLUYKKKJ475/graph.json","events_json":"https://pith.science/api/pith-number/IDDQEDSOZTUA3S3WLUYKKKJ475/events.json","paper":"https://pith.science/paper/IDDQEDSO"},"agent_actions":{"view_html":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475","download_json":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475.json","view_paper":"https://pith.science/paper/IDDQEDSO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1104.3388&json=true","fetch_graph":"https://pith.science/api/pith-number/IDDQEDSOZTUA3S3WLUYKKKJ475/graph.json","fetch_events":"https://pith.science/api/pith-number/IDDQEDSOZTUA3S3WLUYKKKJ475/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475/action/storage_attestation","attest_author":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475/action/author_attestation","sign_citation":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475/action/citation_signature","submit_replication":"https://pith.science/pith/IDDQEDSOZTUA3S3WLUYKKKJ475/action/replication_record"}},"created_at":"2026-05-18T02:02:23.863946+00:00","updated_at":"2026-05-18T02:02:23.863946+00:00"}