{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:U3HGILUWN6U2TB3CKS2ZEKUSA7","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":"708519e97c329bfc68cb8351b1dd88149f19000da4c62c4851cd83d325cbba90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-08-01T15:41:31Z","title_canon_sha256":"9c48be4abb71b36db7c380b8ea1ebe81885125a7e08a1ada125eddcdca400f58"},"schema_version":"1.0","source":{"id":"1708.00390","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.00390","created_at":"2026-05-18T00:25:45Z"},{"alias_kind":"arxiv_version","alias_value":"1708.00390v1","created_at":"2026-05-18T00:25:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.00390","created_at":"2026-05-18T00:25:45Z"},{"alias_kind":"pith_short_12","alias_value":"U3HGILUWN6U2","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"U3HGILUWN6U2TB3C","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"U3HGILUW","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:f75073f527dd7bfa3f1ed612e65effb050ddcb8a461ce00afa1313bbdae6431e","target":"graph","created_at":"2026-05-18T00:25:45Z","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":"We perform infrared conductivity measurements on a series of CaCuO$_2$/SrTiO$_3$ heterostructures made by the insulating cuprate CaCuO$_2$ (CCO) and the insulating perovkite SrTiO$_3$ (STO). We estimate the carrier density of various heterostructures, with different level of hole doping from the integral of the optical conductivity and we measure the corresponding degree of correlation by estimating the ratio between the Drude weight and the integral of the infrared spectrum. The analysis demonstrates a large degree of correlation, which increases as the doping is reduced. The experimental res","authors_text":"A. Perucchi, A. Tebano, D. Di Castro, F. Petocchi, G. Giovannetti, M. Capone, P. Di Pietro, R. Sopracase, S. Lupi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-08-01T15:41:31Z","title":"Electrodynamic properties of an artificial heterostructured superconducting cuprate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00390","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:a70e004df84d1184144df37dd5a47b9aac1dba1cbea2d9ca800821eb7768fd03","target":"record","created_at":"2026-05-18T00:25:45Z","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":"708519e97c329bfc68cb8351b1dd88149f19000da4c62c4851cd83d325cbba90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-08-01T15:41:31Z","title_canon_sha256":"9c48be4abb71b36db7c380b8ea1ebe81885125a7e08a1ada125eddcdca400f58"},"schema_version":"1.0","source":{"id":"1708.00390","kind":"arxiv","version":1}},"canonical_sha256":"a6ce642e966fa9a9876254b5922a9207ec3394beddf11ccd3f3ecffee329e451","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6ce642e966fa9a9876254b5922a9207ec3394beddf11ccd3f3ecffee329e451","first_computed_at":"2026-05-18T00:25:45.410091Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:45.410091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a4rubvM+myqJN+XP0H4a1ComdaK4lFHXG/tV7DyiydA+rkVF7J8MTnyJis/i+hj3/mrR5xFt8w+KA/ZJt/euAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:45.410604Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.00390","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a70e004df84d1184144df37dd5a47b9aac1dba1cbea2d9ca800821eb7768fd03","sha256:f75073f527dd7bfa3f1ed612e65effb050ddcb8a461ce00afa1313bbdae6431e"],"state_sha256":"9f93df7dc598cb8b35562cdfd18ef18ffa7b9b15dffcbbca39a3c984c4c95998"}