{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XBXPXUJS624VXPATSK6LVYFSWZ","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":"5c7d52649b6182bd3678caaf0fe2d3e9720b36ceb1cbc94b0451ac0972b30abd","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-01-25T20:51:15Z","title_canon_sha256":"fc13577ba119d5dee09608fde3ce17280cdae281d71947832f9dfa0d94b3ad66"},"schema_version":"1.0","source":{"id":"1201.5369","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.5369","created_at":"2026-05-18T03:49:59Z"},{"alias_kind":"arxiv_version","alias_value":"1201.5369v1","created_at":"2026-05-18T03:49:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.5369","created_at":"2026-05-18T03:49:59Z"},{"alias_kind":"pith_short_12","alias_value":"XBXPXUJS624V","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XBXPXUJS624VXPAT","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XBXPXUJS","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:1ae369931d96b08af38ce451ad0cdf788e88f05ef712216fb798cd7d7cdc6be5","target":"graph","created_at":"2026-05-18T03:49:59Z","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":"Density functional band calculations have been performed to study LaNiO$_3$/LaAlO$_3$ superlattices. Motivated by recent experiments reporting the magnetic and metal-insulator phase transition as a function of LaNiO$_3$ layer thickness, we examined the electronic structure, magnetic properties, and orbital occupation depending on the number of LaNiO$_3$ layers. Calculations show that the magnetic phase is stabler than the nonmagnetic for finite and positive $U$ values. The orbital polarization is significantly reduced by $U$ even in the magnetic regions. The implications of the results are dis","authors_text":"Michel van Veenendaal, Myung Joon Han","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-01-25T20:51:15Z","title":"Spin moment formation and reduced orbital polarization in LaNiO$_3$/LaAlO$_3$ superlattice: LDA+U study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.5369","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":"sha256:0528f051190164ddec140439ce7512a1c2e9dbe3e1be30caf97900799e07ffe9","target":"record","created_at":"2026-05-18T03:49:59Z","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":"5c7d52649b6182bd3678caaf0fe2d3e9720b36ceb1cbc94b0451ac0972b30abd","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-01-25T20:51:15Z","title_canon_sha256":"fc13577ba119d5dee09608fde3ce17280cdae281d71947832f9dfa0d94b3ad66"},"schema_version":"1.0","source":{"id":"1201.5369","kind":"arxiv","version":1}},"canonical_sha256":"b86efbd132f6b95bbc1392bcbae0b2b665416b7c4e0811ff7720f0283d3cf192","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b86efbd132f6b95bbc1392bcbae0b2b665416b7c4e0811ff7720f0283d3cf192","first_computed_at":"2026-05-18T03:49:59.727143Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:49:59.727143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KRX5Mk+B16sn+12ZQDni3uM9O8hkBdsw9o+WOL0rvbSekIr9mSY2vOrUc1x1xp4wEd7kfswgwZmt/Ix4k2euBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:49:59.727563Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.5369","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0528f051190164ddec140439ce7512a1c2e9dbe3e1be30caf97900799e07ffe9","sha256:1ae369931d96b08af38ce451ad0cdf788e88f05ef712216fb798cd7d7cdc6be5"],"state_sha256":"3db3d8e3547731b96d610a597d69d8b935eee4a581aa29477930da0ce65e2814"}