{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MML2BIKSDA34BATMO54CD7MWW3","short_pith_number":"pith:MML2BIKS","canonical_record":{"source":{"id":"1801.06284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-19T03:25:29Z","cross_cats_sorted":[],"title_canon_sha256":"aa3593224034c8e0b79969537599ca0cb986e4519a968346327cdf0318b2b8a4","abstract_canon_sha256":"44c044af60338fb9c43912dad88f0cc44ce73fb7be7418aece0f909a6c424649"},"schema_version":"1.0"},"canonical_sha256":"6317a0a1521837c0826c777821fd96b6e66356eecbf021dc62465faf6f530f04","source":{"kind":"arxiv","id":"1801.06284","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06284","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06284v1","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06284","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"pith_short_12","alias_value":"MML2BIKSDA34","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MML2BIKSDA34BATM","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MML2BIKS","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MML2BIKSDA34BATMO54CD7MWW3","target":"record","payload":{"canonical_record":{"source":{"id":"1801.06284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-19T03:25:29Z","cross_cats_sorted":[],"title_canon_sha256":"aa3593224034c8e0b79969537599ca0cb986e4519a968346327cdf0318b2b8a4","abstract_canon_sha256":"44c044af60338fb9c43912dad88f0cc44ce73fb7be7418aece0f909a6c424649"},"schema_version":"1.0"},"canonical_sha256":"6317a0a1521837c0826c777821fd96b6e66356eecbf021dc62465faf6f530f04","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:53.303233Z","signature_b64":"6IEAE1Ugamq2sqEMoO8AxtQJT+V16Z5ueq79pUMOoRT4yUQnk3F8k5nmAoGYBXdkL/pjiewBWjR6N5WvsU75Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6317a0a1521837c0826c777821fd96b6e66356eecbf021dc62465faf6f530f04","last_reissued_at":"2026-05-17T23:59:53.302571Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:53.302571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.06284","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":"2026-05-17T23:59:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M4Z6IjugCuqOWHN/aeyvCdJ20tQv891HIGNM4DTbzqIijVKWFd0wTo+zxu9q0kxW7lKYeN4JMJieAdDVa/i5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T10:50:12.947609Z"},"content_sha256":"3960c0e8bf5f99062bffe5835fbc37ef460f37a31c2411a15fda12b529228246","schema_version":"1.0","event_id":"sha256:3960c0e8bf5f99062bffe5835fbc37ef460f37a31c2411a15fda12b529228246"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MML2BIKSDA34BATMO54CD7MWW3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unexpected Termination Switching and Polarity Compensation in LaAlO3/SrTiO3 heterostructures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Abhigyan Dasgupta, Ajay K. Yadav, Charles S. Fadley, David Doenning, Di Yi, Guneeta Singh-Bhalla, Gunnar K. Palsson, Jaganatha S. Suresha, Jayakanth Ravichandran, John T. Heron, Morgan Trassin, Pim B. Rossen, Ramamoorthy Ramesh, Rossitza Pentcheva, Victor G. Ruiz","submitted_at":"2018-01-19T03:25:29Z","abstract_excerpt":"Polar crystals composed of charged ionic planes cannot exist in nature without acquiring surface changes to balance an ever-growing dipole. The necessary changes can manifest structurally or electronically. An electronic asymetry has long been observed in the LaAlO3/SrTiO3 system. Electron accumulation is observed near the LaAlO3/TiO2-SrTiO3 interface, while the LaAlO3/SrO-SrTiO3 stack is insulating. Here, we observe evidence for an asymmetry in the surface chemical termination for nominally stoichiometric LaAlO3 films in contact with the two different surface layers of SrTiO3 crystals, TiO2 a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06284","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":"2026-05-17T23:59:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MKcF5j98efrw7fiplZ47GHWCtPXQoxYbP0nf107z7cDe+J1WHvoza0eAaK2SsCpVy1DjavRdRVTV6B/dwAxtBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T10:50:12.947967Z"},"content_sha256":"ef000db059d332415ca8e903156708177ad31939ce7c43a2e6fd4c9894659194","schema_version":"1.0","event_id":"sha256:ef000db059d332415ca8e903156708177ad31939ce7c43a2e6fd4c9894659194"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MML2BIKSDA34BATMO54CD7MWW3/bundle.json","state_url":"https://pith.science/pith/MML2BIKSDA34BATMO54CD7MWW3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MML2BIKSDA34BATMO54CD7MWW3/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":"2026-06-25T10:50:12Z","links":{"resolver":"https://pith.science/pith/MML2BIKSDA34BATMO54CD7MWW3","bundle":"https://pith.science/pith/MML2BIKSDA34BATMO54CD7MWW3/bundle.json","state":"https://pith.science/pith/MML2BIKSDA34BATMO54CD7MWW3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MML2BIKSDA34BATMO54CD7MWW3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MML2BIKSDA34BATMO54CD7MWW3","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":"44c044af60338fb9c43912dad88f0cc44ce73fb7be7418aece0f909a6c424649","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-19T03:25:29Z","title_canon_sha256":"aa3593224034c8e0b79969537599ca0cb986e4519a968346327cdf0318b2b8a4"},"schema_version":"1.0","source":{"id":"1801.06284","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06284","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06284v1","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06284","created_at":"2026-05-17T23:59:53Z"},{"alias_kind":"pith_short_12","alias_value":"MML2BIKSDA34","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MML2BIKSDA34BATM","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MML2BIKS","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:ef000db059d332415ca8e903156708177ad31939ce7c43a2e6fd4c9894659194","target":"graph","created_at":"2026-05-17T23:59:53Z","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":"Polar crystals composed of charged ionic planes cannot exist in nature without acquiring surface changes to balance an ever-growing dipole. The necessary changes can manifest structurally or electronically. An electronic asymetry has long been observed in the LaAlO3/SrTiO3 system. Electron accumulation is observed near the LaAlO3/TiO2-SrTiO3 interface, while the LaAlO3/SrO-SrTiO3 stack is insulating. Here, we observe evidence for an asymmetry in the surface chemical termination for nominally stoichiometric LaAlO3 films in contact with the two different surface layers of SrTiO3 crystals, TiO2 a","authors_text":"Abhigyan Dasgupta, Ajay K. Yadav, Charles S. Fadley, David Doenning, Di Yi, Guneeta Singh-Bhalla, Gunnar K. Palsson, Jaganatha S. Suresha, Jayakanth Ravichandran, John T. Heron, Morgan Trassin, Pim B. Rossen, Ramamoorthy Ramesh, Rossitza Pentcheva, Victor G. Ruiz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-19T03:25:29Z","title":"Unexpected Termination Switching and Polarity Compensation in LaAlO3/SrTiO3 heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06284","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":"sha256:3960c0e8bf5f99062bffe5835fbc37ef460f37a31c2411a15fda12b529228246","target":"record","created_at":"2026-05-17T23:59:53Z","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":"44c044af60338fb9c43912dad88f0cc44ce73fb7be7418aece0f909a6c424649","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-19T03:25:29Z","title_canon_sha256":"aa3593224034c8e0b79969537599ca0cb986e4519a968346327cdf0318b2b8a4"},"schema_version":"1.0","source":{"id":"1801.06284","kind":"arxiv","version":1}},"canonical_sha256":"6317a0a1521837c0826c777821fd96b6e66356eecbf021dc62465faf6f530f04","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6317a0a1521837c0826c777821fd96b6e66356eecbf021dc62465faf6f530f04","first_computed_at":"2026-05-17T23:59:53.302571Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:53.302571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6IEAE1Ugamq2sqEMoO8AxtQJT+V16Z5ueq79pUMOoRT4yUQnk3F8k5nmAoGYBXdkL/pjiewBWjR6N5WvsU75Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:53.303233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.06284","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3960c0e8bf5f99062bffe5835fbc37ef460f37a31c2411a15fda12b529228246","sha256:ef000db059d332415ca8e903156708177ad31939ce7c43a2e6fd4c9894659194"],"state_sha256":"692c1c29b51bb7836eaeacf489f186f0e86295fd1d8e16b0a937abca468e0bf6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xQ8fjW7m/i/XW2VnH8e6Jtj/0t3aY5rgoDJejIB/w+A+nef9IpQULmgnho8PEN4tg4oEv08ijGOnR3+wxUB8Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T10:50:12.950008Z","bundle_sha256":"fe8fe64dfeb3c583ffd1355a405e9b55221fbcbad84d63083437e23f7c410549"}}