{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:V6HKFF5AEKFJYFPMLXZYWL545D","short_pith_number":"pith:V6HKFF5A","canonical_record":{"source":{"id":"1502.03525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-12T03:47:01Z","cross_cats_sorted":[],"title_canon_sha256":"0ce34b6989ded61d927bbd5a114aaf721d8bbbfa1123957944eb716a075b0af4","abstract_canon_sha256":"1da1bb9ccba5e06c7085bb4b8a6387848fad2026132fe0db8bcc4cc89cfa9a5a"},"schema_version":"1.0"},"canonical_sha256":"af8ea297a0228a9c15ec5df38b2fbce8f32ca3f722b7aeec918c1d91f346fbec","source":{"kind":"arxiv","id":"1502.03525","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.03525","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"arxiv_version","alias_value":"1502.03525v1","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.03525","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"pith_short_12","alias_value":"V6HKFF5AEKFJ","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V6HKFF5AEKFJYFPM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V6HKFF5A","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:V6HKFF5AEKFJYFPMLXZYWL545D","target":"record","payload":{"canonical_record":{"source":{"id":"1502.03525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-12T03:47:01Z","cross_cats_sorted":[],"title_canon_sha256":"0ce34b6989ded61d927bbd5a114aaf721d8bbbfa1123957944eb716a075b0af4","abstract_canon_sha256":"1da1bb9ccba5e06c7085bb4b8a6387848fad2026132fe0db8bcc4cc89cfa9a5a"},"schema_version":"1.0"},"canonical_sha256":"af8ea297a0228a9c15ec5df38b2fbce8f32ca3f722b7aeec918c1d91f346fbec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:03.677523Z","signature_b64":"zCPp6ZX/Pry0hYnz+fpo2DPHXSaqDdND0eWQHh+crDkrZsHjfEWY6CLTqgzzEqMxECjvcLLbr8K+JdToCYerCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af8ea297a0228a9c15ec5df38b2fbce8f32ca3f722b7aeec918c1d91f346fbec","last_reissued_at":"2026-05-18T01:41:03.676905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:03.676905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.03525","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kGm2hSbi60nc1Vtv9kmEQwFZi1AC8Tfo8ZRJBZDzqh++H9VQQKBqYf293sl1SrtYShGeH9l8oFroQKUE6DAzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:51:36.210177Z"},"content_sha256":"bd60657db332f9257c12beab83c402318db2c3a2a4cba5ecd5a5da8967762512","schema_version":"1.0","event_id":"sha256:bd60657db332f9257c12beab83c402318db2c3a2a4cba5ecd5a5da8967762512"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:V6HKFF5AEKFJYFPMLXZYWL545D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impact of Ferroelectric Distortion on Thermopower in BaTiO3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hiroaki Saijo, Koun Shirai, Kunihiko Yamauchi, Tamio Oguchi","submitted_at":"2015-02-12T03:47:01Z","abstract_excerpt":"We present a strategy for increasing thermoelectric performance by invoking ferroelectric distortion in a transition-metal oxide. By using an ab initio calculation approach with the Boltzmann transport equation, a large Seebeck coefficient is calculated in n-type BaTiO3. The polar structural distortion causes the peculiar dispersion of the lowest conduction band, which enhances the Seebeck coefficient along the polar direction. A microscopic mechanism of carrier concentration dependence of the Seebeck coefficient is discussed in terms of the band velocity distribution in the Brillouin zone."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.03525","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:41:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"COnCJrodw7YIivWr/PNpPr0QdP6Jb0/6zoYAh1vJSL933W9wDBqJHSfQ+8tmZKpqdMkj4gsnrWBaPz7rR+AADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:51:36.210847Z"},"content_sha256":"b54fee9b6063f25d5c01e6be71c0cedbe4831fcba383b5edeb83e9cd2f64b734","schema_version":"1.0","event_id":"sha256:b54fee9b6063f25d5c01e6be71c0cedbe4831fcba383b5edeb83e9cd2f64b734"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V6HKFF5AEKFJYFPMLXZYWL545D/bundle.json","state_url":"https://pith.science/pith/V6HKFF5AEKFJYFPMLXZYWL545D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V6HKFF5AEKFJYFPMLXZYWL545D/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":"2026-05-27T07:51:36Z","links":{"resolver":"https://pith.science/pith/V6HKFF5AEKFJYFPMLXZYWL545D","bundle":"https://pith.science/pith/V6HKFF5AEKFJYFPMLXZYWL545D/bundle.json","state":"https://pith.science/pith/V6HKFF5AEKFJYFPMLXZYWL545D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V6HKFF5AEKFJYFPMLXZYWL545D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:V6HKFF5AEKFJYFPMLXZYWL545D","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":"1da1bb9ccba5e06c7085bb4b8a6387848fad2026132fe0db8bcc4cc89cfa9a5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-12T03:47:01Z","title_canon_sha256":"0ce34b6989ded61d927bbd5a114aaf721d8bbbfa1123957944eb716a075b0af4"},"schema_version":"1.0","source":{"id":"1502.03525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.03525","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"arxiv_version","alias_value":"1502.03525v1","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.03525","created_at":"2026-05-18T01:41:03Z"},{"alias_kind":"pith_short_12","alias_value":"V6HKFF5AEKFJ","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V6HKFF5AEKFJYFPM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V6HKFF5A","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:b54fee9b6063f25d5c01e6be71c0cedbe4831fcba383b5edeb83e9cd2f64b734","target":"graph","created_at":"2026-05-18T01:41:03Z","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 present a strategy for increasing thermoelectric performance by invoking ferroelectric distortion in a transition-metal oxide. By using an ab initio calculation approach with the Boltzmann transport equation, a large Seebeck coefficient is calculated in n-type BaTiO3. The polar structural distortion causes the peculiar dispersion of the lowest conduction band, which enhances the Seebeck coefficient along the polar direction. A microscopic mechanism of carrier concentration dependence of the Seebeck coefficient is discussed in terms of the band velocity distribution in the Brillouin zone.","authors_text":"Hiroaki Saijo, Koun Shirai, Kunihiko Yamauchi, Tamio Oguchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-12T03:47:01Z","title":"Impact of Ferroelectric Distortion on Thermopower in BaTiO3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.03525","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:bd60657db332f9257c12beab83c402318db2c3a2a4cba5ecd5a5da8967762512","target":"record","created_at":"2026-05-18T01:41:03Z","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":"1da1bb9ccba5e06c7085bb4b8a6387848fad2026132fe0db8bcc4cc89cfa9a5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-12T03:47:01Z","title_canon_sha256":"0ce34b6989ded61d927bbd5a114aaf721d8bbbfa1123957944eb716a075b0af4"},"schema_version":"1.0","source":{"id":"1502.03525","kind":"arxiv","version":1}},"canonical_sha256":"af8ea297a0228a9c15ec5df38b2fbce8f32ca3f722b7aeec918c1d91f346fbec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af8ea297a0228a9c15ec5df38b2fbce8f32ca3f722b7aeec918c1d91f346fbec","first_computed_at":"2026-05-18T01:41:03.676905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:03.676905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zCPp6ZX/Pry0hYnz+fpo2DPHXSaqDdND0eWQHh+crDkrZsHjfEWY6CLTqgzzEqMxECjvcLLbr8K+JdToCYerCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:03.677523Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.03525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd60657db332f9257c12beab83c402318db2c3a2a4cba5ecd5a5da8967762512","sha256:b54fee9b6063f25d5c01e6be71c0cedbe4831fcba383b5edeb83e9cd2f64b734"],"state_sha256":"4ccf1490433b7648e785dafe999c7f253ec769b099f3d07ba52acec569101abc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3DwnX9ve1LQNOs078F79S1oun2EcOwhHbsin22VJX59I9zwzimSDRAcBUUWFic8zkJfmfPuNoC4tQc1DBCHrBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:51:36.213289Z","bundle_sha256":"0b9e449f224fcabf6b3f4c6a1546dd2db7359e179ccd6fb0952fc44b0750919a"}}