{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GFUCAUTMZR4RC7KQN6TZ2S4543","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":"9e3929a81d5c5f5a2c3f17f183f1ac0393777cf1695ce43646adc2a550e1c449","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-09T14:28:17Z","title_canon_sha256":"88613b567d87f26f0069bc4d8de5ec5ef5e2d347e0110a5375ffd0d8ca90e4c6"},"schema_version":"1.0","source":{"id":"2111.05168","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.05168","created_at":"2026-07-05T04:53:25Z"},{"alias_kind":"arxiv_version","alias_value":"2111.05168v3","created_at":"2026-07-05T04:53:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.05168","created_at":"2026-07-05T04:53:25Z"},{"alias_kind":"pith_short_12","alias_value":"GFUCAUTMZR4R","created_at":"2026-07-05T04:53:25Z"},{"alias_kind":"pith_short_16","alias_value":"GFUCAUTMZR4RC7KQ","created_at":"2026-07-05T04:53:25Z"},{"alias_kind":"pith_short_8","alias_value":"GFUCAUTM","created_at":"2026-07-05T04:53:25Z"}],"graph_snapshots":[{"event_id":"sha256:59ba7ec7b9c24c0e5aa49b82abe8dc0f82740094c066aa1c40baac267719bb97","target":"graph","created_at":"2026-07-05T04:53:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2111.05168/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Doped HfO2 and HfO2-ZrO2 compounds are gaining significant interest thanks to their ferroelectric properties in ultrathin films. Here, we show that ZrO2 could be a playground for doping and strain engineering to increase the thickness in epitaxial thin films. Based on surface energy considerations supported by ab initio calculations, we show that a pure ZrO2 epitaxial thin film exhibits a ferroelectric rhombohedral phase (r-phase, with R3m space group) more stable than for the Hf0.5Zr0.5O2 (HZO) and pure HfO2 cases. In particular, for a thickness up to 37 nm we experimentally evidence a single","authors_text":"Ali El Boutaybi, Ludovic Largeau, Philippe Lecoeur, Sylvia Matzen, Thomas Maroutian","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-09T14:28:17Z","title":"Stabilization of the epitaxial rhombohedral ferroelectric phase in ZrO2 by surface energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.05168","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":"sha256:6920fce3a8211cad912dfc05a9621ec62865d3279fbdbbc65a32f1ca79c1eb05","target":"record","created_at":"2026-07-05T04:53:25Z","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":"9e3929a81d5c5f5a2c3f17f183f1ac0393777cf1695ce43646adc2a550e1c449","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-09T14:28:17Z","title_canon_sha256":"88613b567d87f26f0069bc4d8de5ec5ef5e2d347e0110a5375ffd0d8ca90e4c6"},"schema_version":"1.0","source":{"id":"2111.05168","kind":"arxiv","version":3}},"canonical_sha256":"316820526ccc79117d506fa79d4b9de6f6cd340d72280bb3770baabaf56d641e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"316820526ccc79117d506fa79d4b9de6f6cd340d72280bb3770baabaf56d641e","first_computed_at":"2026-07-05T04:53:25.737120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:53:25.737120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BLgHuB5a/u7H06Hs07vFepdGSPx9th43RTI8syqSp3H6h4d5m8T8Eu/6bZN1ChliEN5+Zi4z/YV9F6mgITafBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:53:25.737680Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.05168","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6920fce3a8211cad912dfc05a9621ec62865d3279fbdbbc65a32f1ca79c1eb05","sha256:59ba7ec7b9c24c0e5aa49b82abe8dc0f82740094c066aa1c40baac267719bb97"],"state_sha256":"ff027ac0da3466196389571e7b6c9b4f012bddb5196c96ee79daa903115b68b8"}