{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:S4KEJJZYG2ZDGFNKL235YVOOIX","short_pith_number":"pith:S4KEJJZY","canonical_record":{"source":{"id":"1511.07484","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-23T22:04:50Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"38845ca3a270825d1731ba464060b526ddbb1b0c0c4a782014b203eb284e5218","abstract_canon_sha256":"fd37ef591f763a3819f562a433b11dd031a40bd88c6cafc998b5f4f8ff516a0b"},"schema_version":"1.0"},"canonical_sha256":"971444a73836b23315aa5eb7dc55ce45ea5d0dc3c4ffd5e859fa62129f0d83c9","source":{"kind":"arxiv","id":"1511.07484","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.07484","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"arxiv_version","alias_value":"1511.07484v1","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07484","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"pith_short_12","alias_value":"S4KEJJZYG2ZD","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"S4KEJJZYG2ZDGFNK","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"S4KEJJZY","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:S4KEJJZYG2ZDGFNKL235YVOOIX","target":"record","payload":{"canonical_record":{"source":{"id":"1511.07484","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-23T22:04:50Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"38845ca3a270825d1731ba464060b526ddbb1b0c0c4a782014b203eb284e5218","abstract_canon_sha256":"fd37ef591f763a3819f562a433b11dd031a40bd88c6cafc998b5f4f8ff516a0b"},"schema_version":"1.0"},"canonical_sha256":"971444a73836b23315aa5eb7dc55ce45ea5d0dc3c4ffd5e859fa62129f0d83c9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:26:04.679076Z","signature_b64":"f4dXjX+5z20GfN2FBhOH+NezfrGuGbpYTEN0G2izWjjO0rc6j1WpinVYe4XoGcOamtN6nBvvgyGht9iCDEzgAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"971444a73836b23315aa5eb7dc55ce45ea5d0dc3c4ffd5e859fa62129f0d83c9","last_reissued_at":"2026-05-18T01:26:04.678556Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:26:04.678556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.07484","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:26:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nit3fo0awYzNZ4YUT1sgcNVT61MYDzGWKgOFxl7+nq3yLdvVzbD24yyAH9fF6vx2am+8kiHmVXPAtb3QW0uPDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:53:18.080080Z"},"content_sha256":"7bf54f6114b082d5d52a60a63c8e263874413e63f99ded5709cd0568d6e98d78","schema_version":"1.0","event_id":"sha256:7bf54f6114b082d5d52a60a63c8e263874413e63f99ded5709cd0568d6e98d78"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:S4KEJJZYG2ZDGFNKL235YVOOIX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metallic interface in non-SrTiO3 based titanate superlattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"D. Choudhury, J. Chakhalian, M. Kareev, S. Middey, Xiaoran Liu, Yanwei Cao","submitted_at":"2015-11-23T22:04:50Z","abstract_excerpt":"We report on the fabrication of all perovskite Mott insulator/band insulator YTiO3/CaTiO3 superlattices by pulsed laser deposition. The combination of in situ reflection high energy electron diffraction, X-ray diffraction, and X-ray reflectivity confirms the high quality of the films grown in a layer-by-layer mode. Electrical transport measurements reveal that a non-SrTiO3 based two dimensional electron gas system has formed at the YTiO3/CaTiO3 interface. These studies offer another route in the pursuit of complex oxide two-dimensional electron gas systems, which allows to obtain greater insig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07484","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:26:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ukgd3ZN/uRRM6jy4y4E8VfPKkviY5XggRviKMjF/m2XsxROXHU+Fc8iiZwEcN0YnGB3zP8a39SXal58AVKieBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:53:18.080476Z"},"content_sha256":"ea551c3c1722ab5dc89538dddbb72240e177f23feb51af6abd9f454cc73e1762","schema_version":"1.0","event_id":"sha256:ea551c3c1722ab5dc89538dddbb72240e177f23feb51af6abd9f454cc73e1762"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/bundle.json","state_url":"https://pith.science/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-29T16:53:18Z","links":{"resolver":"https://pith.science/pith/S4KEJJZYG2ZDGFNKL235YVOOIX","bundle":"https://pith.science/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/bundle.json","state":"https://pith.science/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4KEJJZYG2ZDGFNKL235YVOOIX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:S4KEJJZYG2ZDGFNKL235YVOOIX","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":"fd37ef591f763a3819f562a433b11dd031a40bd88c6cafc998b5f4f8ff516a0b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-23T22:04:50Z","title_canon_sha256":"38845ca3a270825d1731ba464060b526ddbb1b0c0c4a782014b203eb284e5218"},"schema_version":"1.0","source":{"id":"1511.07484","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.07484","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"arxiv_version","alias_value":"1511.07484v1","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07484","created_at":"2026-05-18T01:26:04Z"},{"alias_kind":"pith_short_12","alias_value":"S4KEJJZYG2ZD","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"S4KEJJZYG2ZDGFNK","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"S4KEJJZY","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:ea551c3c1722ab5dc89538dddbb72240e177f23feb51af6abd9f454cc73e1762","target":"graph","created_at":"2026-05-18T01:26:04Z","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 report on the fabrication of all perovskite Mott insulator/band insulator YTiO3/CaTiO3 superlattices by pulsed laser deposition. The combination of in situ reflection high energy electron diffraction, X-ray diffraction, and X-ray reflectivity confirms the high quality of the films grown in a layer-by-layer mode. Electrical transport measurements reveal that a non-SrTiO3 based two dimensional electron gas system has formed at the YTiO3/CaTiO3 interface. These studies offer another route in the pursuit of complex oxide two-dimensional electron gas systems, which allows to obtain greater insig","authors_text":"D. Choudhury, J. Chakhalian, M. Kareev, S. Middey, Xiaoran Liu, Yanwei Cao","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-23T22:04:50Z","title":"Metallic interface in non-SrTiO3 based titanate superlattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07484","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":"sha256:7bf54f6114b082d5d52a60a63c8e263874413e63f99ded5709cd0568d6e98d78","target":"record","created_at":"2026-05-18T01:26:04Z","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":"fd37ef591f763a3819f562a433b11dd031a40bd88c6cafc998b5f4f8ff516a0b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-23T22:04:50Z","title_canon_sha256":"38845ca3a270825d1731ba464060b526ddbb1b0c0c4a782014b203eb284e5218"},"schema_version":"1.0","source":{"id":"1511.07484","kind":"arxiv","version":1}},"canonical_sha256":"971444a73836b23315aa5eb7dc55ce45ea5d0dc3c4ffd5e859fa62129f0d83c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"971444a73836b23315aa5eb7dc55ce45ea5d0dc3c4ffd5e859fa62129f0d83c9","first_computed_at":"2026-05-18T01:26:04.678556Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:26:04.678556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f4dXjX+5z20GfN2FBhOH+NezfrGuGbpYTEN0G2izWjjO0rc6j1WpinVYe4XoGcOamtN6nBvvgyGht9iCDEzgAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:26:04.679076Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.07484","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bf54f6114b082d5d52a60a63c8e263874413e63f99ded5709cd0568d6e98d78","sha256:ea551c3c1722ab5dc89538dddbb72240e177f23feb51af6abd9f454cc73e1762"],"state_sha256":"75ecf7ce0a2888092430cefc99e49a953d9fd014385ad8041c8b7388a486d5e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UyiV73iQAM8cWk+bbcLfJG4RCXsK7wdTtmSSjqTSG+3P3H0oH0k3vgjS2Jfp5VSgVKb+NjU5aSxBoH4c4120DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T16:53:18.083048Z","bundle_sha256":"f8c2db0f3314124af5a5077f1780fbab3245623e53b5d3628418bcae46c10bfa"}}