{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RWV72AF7RCRYFP2MPAYXCUEXDY","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":"195ac49137865368cff19019e07a7d289571ea77d193a734e1a09f77050e3a80","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-09-04T18:17:34Z","title_canon_sha256":"a9d23438ad525d8941adebe10d4097d9a05b630e67ba34072f2e338a53328d17"},"schema_version":"1.0","source":{"id":"1209.0721","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0721","created_at":"2026-05-18T03:44:35Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0721v1","created_at":"2026-05-18T03:44:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0721","created_at":"2026-05-18T03:44:35Z"},{"alias_kind":"pith_short_12","alias_value":"RWV72AF7RCRY","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RWV72AF7RCRYFP2M","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RWV72AF7","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:938c2dac61f8bfc8c35c7173f249cc451390540c1bea3b3ab0f66e972b76ed64","target":"graph","created_at":"2026-05-18T03:44:35Z","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":"A 2D electron gas system in an oxide heterostructure serves as an important playground for novel phenomena. Here, we show that, by using fractional delta-doping to control the interface's composition in LaxSr1-xTiO3/SrTiO3 artificial oxide superlattices, the filling-controlled 2D insulator-metal transition can be realized. The atomic-scale control of d-electron band filling, which in turn contributes to the tuning of effective mass and density of the charge carriers, is found to be a fascinating route to substantially enhanced carrier mobilities.","authors_text":"Ho Nyung Lee, Suyoun Lee, Valentino R. Cooper, Woo Seok Choi","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-09-04T18:17:34Z","title":"Fractionally delta-doped oxide superlattices for higher carrier mobilities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0721","kind":"arxiv","version":1},"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":"sha256:7ce89a95b3a8cddb16445cf66256e7f0f974fc412ca8bde340b612e208da335c","target":"record","created_at":"2026-05-18T03:44:35Z","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":"195ac49137865368cff19019e07a7d289571ea77d193a734e1a09f77050e3a80","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-09-04T18:17:34Z","title_canon_sha256":"a9d23438ad525d8941adebe10d4097d9a05b630e67ba34072f2e338a53328d17"},"schema_version":"1.0","source":{"id":"1209.0721","kind":"arxiv","version":1}},"canonical_sha256":"8dabfd00bf88a382bf4c78317150971e0d2613db2b141a9eccaa0db1194db12c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8dabfd00bf88a382bf4c78317150971e0d2613db2b141a9eccaa0db1194db12c","first_computed_at":"2026-05-18T03:44:35.543963Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:35.543963Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SPJx4vgPvMm3g0JeMAvSMJDkm6rzEYoOt1yrIgLa1Tn89tgjy2GfhvvzWK4waUcPSXtOpErTaZ+mjEj7I7/+AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:35.544656Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.0721","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ce89a95b3a8cddb16445cf66256e7f0f974fc412ca8bde340b612e208da335c","sha256:938c2dac61f8bfc8c35c7173f249cc451390540c1bea3b3ab0f66e972b76ed64"],"state_sha256":"82fe728d81ebc34cfd75681046f14e859b465faf957abafb522f731aecd82b7c"}