{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:K6DOBJCNECHCW6NKCZCXRIY7Y7","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":"ed08d73c19e74a440577304aa4c590ad4e85e08bfdfe02ba3d82838990adba36","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-03-22T23:49:33Z","title_canon_sha256":"41597cfa2fdd4af048fe6234bf058d692b81552bd6f14a4b53a191d0c495de23"},"schema_version":"1.0","source":{"id":"1103.4419","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.4419","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"arxiv_version","alias_value":"1103.4419v1","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.4419","created_at":"2026-05-18T02:43:01Z"},{"alias_kind":"pith_short_12","alias_value":"K6DOBJCNECHC","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"K6DOBJCNECHCW6NK","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"K6DOBJCN","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:94b89e115684a110c642cd41be8cddafecc3ed545e0ead97a883acfd3a447734","target":"graph","created_at":"2026-05-18T02:43:01Z","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 report a proof-of-concept demonstration of negative capacitance effect in a nanoscale ferroelectric-dielectric heterostructure. In a bilayer of ferroelectric, Pb(Zr0.2Ti0.8)O3 and dielectric, SrTiO3, the composite capacitance was observed to be larger than the constituent SrTiO3 capacitance, indicating an effective negative capacitance of the constituent Pb(Zr0.2Ti0.8)O3 layer. Temperature is shown to be an effective tuning parameter for the ferroelectric negative capacitance and the degree of capacitance enhancement in the heterostructure. Landau's mean field theory based calculations show","authors_text":"Asif Islam Khan, Debanjan Bhowmik, Pu Yu, Ramamoorthy Ramesh, Sayeef Salahuddin, Sung Joo Kim, Xiaoqing Pan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-03-22T23:49:33Z","title":"Experimental Evidence of Ferroelectric Negative Capacitance in Nanoscale Heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.4419","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":"sha256:48e9b999373f2686baa5789a3e5313be47ba8e1f4a1068a8b6554d66841bdd62","target":"record","created_at":"2026-05-18T02:43:01Z","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":"ed08d73c19e74a440577304aa4c590ad4e85e08bfdfe02ba3d82838990adba36","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-03-22T23:49:33Z","title_canon_sha256":"41597cfa2fdd4af048fe6234bf058d692b81552bd6f14a4b53a191d0c495de23"},"schema_version":"1.0","source":{"id":"1103.4419","kind":"arxiv","version":1}},"canonical_sha256":"5786e0a44d208e2b79aa164578a31fc7fd0ed761d265dd2c3611834b65e28e2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5786e0a44d208e2b79aa164578a31fc7fd0ed761d265dd2c3611834b65e28e2c","first_computed_at":"2026-05-18T02:43:01.003980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:01.003980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EVbA+wfBYvid6TvCF8M3awTFiajywNjlMsaiuIT+h4PaOR32o4RpTc410LpdFZwzFypTjfMFfFTZvQURnwKACQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:01.004519Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.4419","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48e9b999373f2686baa5789a3e5313be47ba8e1f4a1068a8b6554d66841bdd62","sha256:94b89e115684a110c642cd41be8cddafecc3ed545e0ead97a883acfd3a447734"],"state_sha256":"d2ed5f6f098556a1c1acedb3c893e312f40f56669748a77e5dba400173ab3a1d"}