{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:H6EB6PQG4X66ZCPSOHZ7CBCGNO","short_pith_number":"pith:H6EB6PQG","schema_version":"1.0","canonical_sha256":"3f881f3e06e5fdec89f271f3f104466b85c575b8ac35eb9e3977390ab3a99360","source":{"kind":"arxiv","id":"1004.4100","version":2},"attestation_state":"computed","paper":{"title":"Metal-insulator transition and the Pr$^{3+}$/Pr$^{4+}$ valence shift in (Pr$_{1-y}$Y$_{y}$)$_{0.7}$Ca$_{0.3}$CoO$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"E. \\v{S}antav\\'a, H. Fujishiro, H. Sasaki, J. Hejtm\\'anek, K. Kn\\'i\\v{z}ek, M. Mary\\v{s}ko, Z. Jir\\'ak T. Naito","submitted_at":"2010-04-23T11:22:16Z","abstract_excerpt":"The magnetic, electric and thermal properties of the ($Ln_{1-y}$Y$_{y}$)$_{0.7}$Ca$_{0.3}$CoO$_3$ perovskites ($Ln$~=~Pr, Nd) were investigated down to very low temperatures. The main attention was given to a peculiar metal-insulator transition, which is observed in the praseodymium based samples with $y=0.075$ and 0.15 at $T_{M-I}=64$ and 132~K, respectively. The study suggests that the transition, reported originally in Pr$_{0.5}$Ca$_{0.5}$CoO$_3$, is not due to a mere change of cobalt ions from the intermediate- to the low-spin states, but is associated also with a significant electron tran"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1004.4100","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-04-23T11:22:16Z","cross_cats_sorted":[],"title_canon_sha256":"bcc3e62e81e06eb8febf70ba5619e3479461c56995839ff28262b200bb6738c4","abstract_canon_sha256":"3d635e7d4b27abb5a7bae417470798dcd07d9f610e6e1670c9bf30471caebd3f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:54.695399Z","signature_b64":"u1D3CjBks1BeLAUdq/AgIrKJCzRSJwhiFVPfM5pt7zLzZk8ArIWTubLwW+vLHOBPalZC9pC1ehpnKlTfBl1GAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f881f3e06e5fdec89f271f3f104466b85c575b8ac35eb9e3977390ab3a99360","last_reissued_at":"2026-05-18T02:07:54.694812Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:54.694812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Metal-insulator transition and the Pr$^{3+}$/Pr$^{4+}$ valence shift in (Pr$_{1-y}$Y$_{y}$)$_{0.7}$Ca$_{0.3}$CoO$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"E. \\v{S}antav\\'a, H. Fujishiro, H. Sasaki, J. Hejtm\\'anek, K. Kn\\'i\\v{z}ek, M. Mary\\v{s}ko, Z. Jir\\'ak T. Naito","submitted_at":"2010-04-23T11:22:16Z","abstract_excerpt":"The magnetic, electric and thermal properties of the ($Ln_{1-y}$Y$_{y}$)$_{0.7}$Ca$_{0.3}$CoO$_3$ perovskites ($Ln$~=~Pr, Nd) were investigated down to very low temperatures. The main attention was given to a peculiar metal-insulator transition, which is observed in the praseodymium based samples with $y=0.075$ and 0.15 at $T_{M-I}=64$ and 132~K, respectively. The study suggests that the transition, reported originally in Pr$_{0.5}$Ca$_{0.5}$CoO$_3$, is not due to a mere change of cobalt ions from the intermediate- to the low-spin states, but is associated also with a significant electron tran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.4100","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1004.4100","created_at":"2026-05-18T02:07:54.694910+00:00"},{"alias_kind":"arxiv_version","alias_value":"1004.4100v2","created_at":"2026-05-18T02:07:54.694910+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.4100","created_at":"2026-05-18T02:07:54.694910+00:00"},{"alias_kind":"pith_short_12","alias_value":"H6EB6PQG4X66","created_at":"2026-05-18T12:26:07.630475+00:00"},{"alias_kind":"pith_short_16","alias_value":"H6EB6PQG4X66ZCPS","created_at":"2026-05-18T12:26:07.630475+00:00"},{"alias_kind":"pith_short_8","alias_value":"H6EB6PQG","created_at":"2026-05-18T12:26:07.630475+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO","json":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO.json","graph_json":"https://pith.science/api/pith-number/H6EB6PQG4X66ZCPSOHZ7CBCGNO/graph.json","events_json":"https://pith.science/api/pith-number/H6EB6PQG4X66ZCPSOHZ7CBCGNO/events.json","paper":"https://pith.science/paper/H6EB6PQG"},"agent_actions":{"view_html":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO","download_json":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO.json","view_paper":"https://pith.science/paper/H6EB6PQG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1004.4100&json=true","fetch_graph":"https://pith.science/api/pith-number/H6EB6PQG4X66ZCPSOHZ7CBCGNO/graph.json","fetch_events":"https://pith.science/api/pith-number/H6EB6PQG4X66ZCPSOHZ7CBCGNO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO/action/storage_attestation","attest_author":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO/action/author_attestation","sign_citation":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO/action/citation_signature","submit_replication":"https://pith.science/pith/H6EB6PQG4X66ZCPSOHZ7CBCGNO/action/replication_record"}},"created_at":"2026-05-18T02:07:54.694910+00:00","updated_at":"2026-05-18T02:07:54.694910+00:00"}