{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:6OLVZVS4MZ2E3FYYHN3C5BJSQZ","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":"e1739834192bae8283d538473af08c8c4b9aa8de6918481248b050386ff1ce3d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-06-10T18:19:32Z","title_canon_sha256":"2453cb9def5dc6b12463856e9f46d90452141cb6b5298325d0c2d2e2ea23fce6"},"schema_version":"1.0","source":{"id":"2606.12568","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.12568","created_at":"2026-06-12T00:07:55Z"},{"alias_kind":"arxiv_version","alias_value":"2606.12568v1","created_at":"2026-06-12T00:07:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.12568","created_at":"2026-06-12T00:07:55Z"},{"alias_kind":"pith_short_12","alias_value":"6OLVZVS4MZ2E","created_at":"2026-06-12T00:07:55Z"},{"alias_kind":"pith_short_16","alias_value":"6OLVZVS4MZ2E3FYY","created_at":"2026-06-12T00:07:55Z"},{"alias_kind":"pith_short_8","alias_value":"6OLVZVS4","created_at":"2026-06-12T00:07:55Z"}],"graph_snapshots":[{"event_id":"sha256:b69479cdee9c86c0577220bdf24d19c1cc47ab0d5700377dc2b0c53ccf1a3ed6","target":"graph","created_at":"2026-06-12T00:07:55Z","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/2606.12568/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ferroelectric AlScN is promising for CMOS-compatible non-volatile memory, but thickness scaling is limited by leakage, premature breakdown, and defect-mediated failure. Here we show that compositional grading within a continuous wurtzite AlN-AlScN lattice mitigates these limitations by distributing structural and polarization discontinuities across the film thickness, reducing defect formation and local field concentration. In a 20 nm graded heterostructure, monotonic Sc incorporation and AlN-rich boundaries produce reversible ferroelectric switching, an as-grown metal-polar state, a 21% highe","authors_text":"Bongjun Choi, Chao-Chuan Chen, Chloe Leblanc, Deep Jariwala, Eric A. Stach, Haiwen Zhang, Hyunmin Cho, Kefei Bao, Pedram Yousefian, Rajeev Kumar Rai, Roy Olsson, Xiaolei Tong, Yuhong Cao, Yunfei He, Zekun Hu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-06-10T18:19:32Z","title":"Compositional gradient engineering for enhanced ferroelectricity in ultrathin AlScN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12568","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:b2204b4dd511edbade068a517202bd81c76cb3724ca9e2e67fb7d04ac0da3f90","target":"record","created_at":"2026-06-12T00:07:55Z","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":"e1739834192bae8283d538473af08c8c4b9aa8de6918481248b050386ff1ce3d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-06-10T18:19:32Z","title_canon_sha256":"2453cb9def5dc6b12463856e9f46d90452141cb6b5298325d0c2d2e2ea23fce6"},"schema_version":"1.0","source":{"id":"2606.12568","kind":"arxiv","version":1}},"canonical_sha256":"f3975cd65c66744d97183b762e8532866fcf553cf202cb95e0d07e9e9678ec37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3975cd65c66744d97183b762e8532866fcf553cf202cb95e0d07e9e9678ec37","first_computed_at":"2026-06-12T00:07:55.057175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-12T00:07:55.057175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lr1ZHGjGPRQ573oowIP7aZgaUAeb0GnVWnt7GW0vk2eSIAiNgl2lf52mhpVL+byc9uojfDQtBdC3dJ3dGdm4CQ==","signature_status":"signed_v1","signed_at":"2026-06-12T00:07:55.057819Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.12568","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2204b4dd511edbade068a517202bd81c76cb3724ca9e2e67fb7d04ac0da3f90","sha256:b69479cdee9c86c0577220bdf24d19c1cc47ab0d5700377dc2b0c53ccf1a3ed6"],"state_sha256":"c4745fcf70d1a513896e3cfa86211bbf64615d7350b2b923e4c6563720e44bf2"}