{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FXMCXBLLQ6774Q55FVLBFJNFTS","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":"12fb62642eb75df782cf50be28c8558bdffe85f452172da922b4afed4266eba1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-05T07:14:12Z","title_canon_sha256":"0ab36948455f025588e37e32b59b68f6cd432c278c9a5aa5f1f13f080333cf57"},"schema_version":"1.0","source":{"id":"1306.1002","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.1002","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1306.1002v3","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.1002","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"FXMCXBLLQ677","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FXMCXBLLQ6774Q55","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FXMCXBLL","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:b0a15cd04c670485b438578226867acd02b958148e06b621bb6aa41524e98b3a","target":"graph","created_at":"2026-05-18T03:11:46Z","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 theoretically investigate the influence of internal and external strain on topological phases in (LaNiO$_3$)$_2$/(LaAlO$_3$)$_N$ heterostructures grown along the [111] direction. At the Hartree-Fock level, topological phases originate from an interaction-generated effective spin-orbit coupling that opens a gap in the band structure. For the unstrained system, there is a quadratic band touching at the $\\Gamma$ point at the Fermi energy for unpolarized electrons and Dirac points at K, K$'$ at the Fermi energy for fully polarized electrons. Using density functional theory we show that the quad","authors_text":"Alexander A. Demkov, Andreas R\\\"uegg, Chandrima Mitra, Gregory A. Fiete","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-05T07:14:12Z","title":"Lattice distortion effects on topological phases in (LaNiO$_3$)$_2$/(LaAlO$_3$)$_N$ heterostructures grown along the [111] direction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.1002","kind":"arxiv","version":3},"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":"sha256:90520a6a597f5e1b498ccd8e57ae2750fca2bd752c0bcccdcab8d18e1c20edaf","target":"record","created_at":"2026-05-18T03:11:46Z","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":"12fb62642eb75df782cf50be28c8558bdffe85f452172da922b4afed4266eba1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-05T07:14:12Z","title_canon_sha256":"0ab36948455f025588e37e32b59b68f6cd432c278c9a5aa5f1f13f080333cf57"},"schema_version":"1.0","source":{"id":"1306.1002","kind":"arxiv","version":3}},"canonical_sha256":"2dd82b856b87bffe43bd2d5612a5a59c8d5c952be6d3a320038cadb6ca7da6f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2dd82b856b87bffe43bd2d5612a5a59c8d5c952be6d3a320038cadb6ca7da6f1","first_computed_at":"2026-05-18T03:11:46.539985Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:46.539985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"93NUl1C22uwhmC+sDH9APGgRijZsqBIKOhSP5mblSLobgDSxGJc/dFRQGisEhAkH3mXbASaeKjQIO+0aUR2TDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:46.540607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.1002","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90520a6a597f5e1b498ccd8e57ae2750fca2bd752c0bcccdcab8d18e1c20edaf","sha256:b0a15cd04c670485b438578226867acd02b958148e06b621bb6aa41524e98b3a"],"state_sha256":"a332a2c7ca042a4b04dc2592f9f9cf9a213ce3202bb1f30197de6c68546f84d3"}