{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:BMSGU37OJNYXLP5HZ3X474ZVY3","short_pith_number":"pith:BMSGU37O","canonical_record":{"source":{"id":"2408.01830","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-03T17:45:14Z","cross_cats_sorted":[],"title_canon_sha256":"03d8270a766bd8e5a0d2cccd91708504219ceeffd7f1aaf5401fb099d5a0ccc9","abstract_canon_sha256":"2dc060314e4a4acc1377170fa74b41bd6be6f6975d5118d3742d8a83828b9f6b"},"schema_version":"1.0"},"canonical_sha256":"0b246a6fee4b7175bfa7ceefcff335c6c064e67b6cec923e19177d50b7454d99","source":{"kind":"arxiv","id":"2408.01830","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.01830","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"arxiv_version","alias_value":"2408.01830v2","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.01830","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_12","alias_value":"BMSGU37OJNYX","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_16","alias_value":"BMSGU37OJNYXLP5H","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_8","alias_value":"BMSGU37O","created_at":"2026-07-05T11:47:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:BMSGU37OJNYXLP5HZ3X474ZVY3","target":"record","payload":{"canonical_record":{"source":{"id":"2408.01830","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-03T17:45:14Z","cross_cats_sorted":[],"title_canon_sha256":"03d8270a766bd8e5a0d2cccd91708504219ceeffd7f1aaf5401fb099d5a0ccc9","abstract_canon_sha256":"2dc060314e4a4acc1377170fa74b41bd6be6f6975d5118d3742d8a83828b9f6b"},"schema_version":"1.0"},"canonical_sha256":"0b246a6fee4b7175bfa7ceefcff335c6c064e67b6cec923e19177d50b7454d99","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:47:12.959746Z","signature_b64":"gqqo9SHOKjFWWEq88F1VNqjBAM86svxbbKROEOso/v2r9Xtps/c3NXzgiYkfy4C2HaeeRU6+wM+0AuhDUGW3BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b246a6fee4b7175bfa7ceefcff335c6c064e67b6cec923e19177d50b7454d99","last_reissued_at":"2026-07-05T11:47:12.959233Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:47:12.959233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2408.01830","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:47:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PEugCWZYev1CO4kvdpcHt2pkc8zUGhJC1W4HAmnuMvMTSlEzNPf3Mj3eeIxJjjlm2HA1J340SfrzInUQ1ZrPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T14:50:06.089416Z"},"content_sha256":"6cd7e4159ac44898c86e7c028330b3daa02bb301c1dabc42059e833e49010f91","schema_version":"1.0","event_id":"sha256:6cd7e4159ac44898c86e7c028330b3daa02bb301c1dabc42059e833e49010f91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:BMSGU37OJNYXLP5HZ3X474ZVY3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Antiferroelectric Hafnia Down to the 2D Limit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexei Gruverman, Amit Kumar Shah, Andrew R. Lupini, Evgeny Y. Tsymbal, Guodong Ren, Haidong Lu, Huibo Cao, Jordan A. Hachtel, Juan Carlos Idrobo, Kai Huang, Kartik Samanta, Miaofang Chi, Pratyush Buragohain, Pravan Omprakash, Rohan Mishra, Xiaoshan Xu, Xin Li, Yan Wu, Yu Yun","submitted_at":"2024-08-03T17:45:14Z","abstract_excerpt":"Antiferroelectricity is a material property characterized by alternating electric dipoles spontaneously ordered in antiparallel directions. Antiferroelectrics are promising for energy storage, solid-state cooling, and memory technologies; however, these materials are scarce, and their scalability remains largely unexplored. In this work, we demonstrate that single-crystalline hafnia, a lead-free CMOS-compatible material, exhibits antiferroelectricity under compressive-strain conditions. We observe antiparallel sublattice polarization and stable double-hysteresis in single-crystalline (111)-ori"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.01830","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.01830/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:47:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BTUsJO19FYyZklTr4wmmeNPgXwUGCt5fD37Vl7+NOFVovhlR4RFU+rQ2EhZwIH5leUCd5FNUNbDCrJRYJ8fJCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T14:50:06.089794Z"},"content_sha256":"acedf6a83863d2f1f4a78c1a654944d6c02ac66684194c3982acf6448afac92b","schema_version":"1.0","event_id":"sha256:acedf6a83863d2f1f4a78c1a654944d6c02ac66684194c3982acf6448afac92b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/bundle.json","state_url":"https://pith.science/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/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":"2026-08-01T14:50:06Z","links":{"resolver":"https://pith.science/pith/BMSGU37OJNYXLP5HZ3X474ZVY3","bundle":"https://pith.science/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/bundle.json","state":"https://pith.science/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BMSGU37OJNYXLP5HZ3X474ZVY3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:BMSGU37OJNYXLP5HZ3X474ZVY3","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":"2dc060314e4a4acc1377170fa74b41bd6be6f6975d5118d3742d8a83828b9f6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-03T17:45:14Z","title_canon_sha256":"03d8270a766bd8e5a0d2cccd91708504219ceeffd7f1aaf5401fb099d5a0ccc9"},"schema_version":"1.0","source":{"id":"2408.01830","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.01830","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"arxiv_version","alias_value":"2408.01830v2","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.01830","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_12","alias_value":"BMSGU37OJNYX","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_16","alias_value":"BMSGU37OJNYXLP5H","created_at":"2026-07-05T11:47:12Z"},{"alias_kind":"pith_short_8","alias_value":"BMSGU37O","created_at":"2026-07-05T11:47:12Z"}],"graph_snapshots":[{"event_id":"sha256:acedf6a83863d2f1f4a78c1a654944d6c02ac66684194c3982acf6448afac92b","target":"graph","created_at":"2026-07-05T11:47:12Z","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/2408.01830/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Antiferroelectricity is a material property characterized by alternating electric dipoles spontaneously ordered in antiparallel directions. Antiferroelectrics are promising for energy storage, solid-state cooling, and memory technologies; however, these materials are scarce, and their scalability remains largely unexplored. In this work, we demonstrate that single-crystalline hafnia, a lead-free CMOS-compatible material, exhibits antiferroelectricity under compressive-strain conditions. We observe antiparallel sublattice polarization and stable double-hysteresis in single-crystalline (111)-ori","authors_text":"Alexei Gruverman, Amit Kumar Shah, Andrew R. Lupini, Evgeny Y. Tsymbal, Guodong Ren, Haidong Lu, Huibo Cao, Jordan A. Hachtel, Juan Carlos Idrobo, Kai Huang, Kartik Samanta, Miaofang Chi, Pratyush Buragohain, Pravan Omprakash, Rohan Mishra, Xiaoshan Xu, Xin Li, Yan Wu, Yu Yun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-03T17:45:14Z","title":"Antiferroelectric Hafnia Down to the 2D Limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.01830","kind":"arxiv","version":2},"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":"sha256:6cd7e4159ac44898c86e7c028330b3daa02bb301c1dabc42059e833e49010f91","target":"record","created_at":"2026-07-05T11:47:12Z","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":"2dc060314e4a4acc1377170fa74b41bd6be6f6975d5118d3742d8a83828b9f6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-08-03T17:45:14Z","title_canon_sha256":"03d8270a766bd8e5a0d2cccd91708504219ceeffd7f1aaf5401fb099d5a0ccc9"},"schema_version":"1.0","source":{"id":"2408.01830","kind":"arxiv","version":2}},"canonical_sha256":"0b246a6fee4b7175bfa7ceefcff335c6c064e67b6cec923e19177d50b7454d99","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b246a6fee4b7175bfa7ceefcff335c6c064e67b6cec923e19177d50b7454d99","first_computed_at":"2026-07-05T11:47:12.959233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:47:12.959233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gqqo9SHOKjFWWEq88F1VNqjBAM86svxbbKROEOso/v2r9Xtps/c3NXzgiYkfy4C2HaeeRU6+wM+0AuhDUGW3BA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:47:12.959746Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.01830","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cd7e4159ac44898c86e7c028330b3daa02bb301c1dabc42059e833e49010f91","sha256:acedf6a83863d2f1f4a78c1a654944d6c02ac66684194c3982acf6448afac92b"],"state_sha256":"efc50e5749f686240505cdc9dae793496058f2a3702a6f7c48e69f7143629ef3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GbZv2sjScOuV/QjbbQipgaitPo11qtdRTmGMNfwWvzfs4058Vad+dmWadjxrRgW+H3QlgZIqRpHocPDuWE71CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T14:50:06.092204Z","bundle_sha256":"f1dcfd18ab68833af18146ede619048e35d9ea144978818c48a6509d31d8f11a"}}