{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:I2HAEZLZU4CAF66BLX6XNTCOSS","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":"307d7ec2b08fa8e3605627bb8a733fe2dcaa3f6aa2da1f164841ea49d3869b0d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-11-30T11:52:45Z","title_canon_sha256":"ce8dbf402e266e503de4d596d4da4aa7b3aa78cecd867e8ef11c792880c96541"},"schema_version":"1.0","source":{"id":"1011.6519","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.6519","created_at":"2026-05-18T04:24:07Z"},{"alias_kind":"arxiv_version","alias_value":"1011.6519v1","created_at":"2026-05-18T04:24:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.6519","created_at":"2026-05-18T04:24:07Z"},{"alias_kind":"pith_short_12","alias_value":"I2HAEZLZU4CA","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"I2HAEZLZU4CAF66B","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"I2HAEZLZ","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:343b86391f6066751491b59cac7d8139cd91756b7652d0b8e3d82fbea9c1bb0c","target":"graph","created_at":"2026-05-18T04:24:07Z","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 an enhancement of superconducting transition temperature ($T_{\\rm c}$) when Chromium (Cr) is substituted in excess at the Iron (Fe) site (FeCr$_x$Se, $x=$0.01, 0.02 and 0.03). There is a corresponding increase in the superconducting volume fraction with $T_{\\rm c}$ attaining a value of 11.2 K on 2 $%$ Cr substitution when compared to a $T_{\\rm c}$ of 8.5 K for the conventional tetragonal Fe-excess sample Fe$_{1+x}$Se. The results point to the role of chemical pressure (introduced via ionic size variation at the Fe site upon Cr substitution in excess) on superconducting properties.","authors_text":"Ajay D. Thakur, Anil K Yadav, C V Tomy","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-11-30T11:52:45Z","title":"Enhanced superconducting properties in FeCr$_x$Se"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.6519","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:f15f88330ac5f1ac4edc363611875151f6c8947e4dfbeea32855b0afb55d2e38","target":"record","created_at":"2026-05-18T04:24:07Z","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":"307d7ec2b08fa8e3605627bb8a733fe2dcaa3f6aa2da1f164841ea49d3869b0d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-11-30T11:52:45Z","title_canon_sha256":"ce8dbf402e266e503de4d596d4da4aa7b3aa78cecd867e8ef11c792880c96541"},"schema_version":"1.0","source":{"id":"1011.6519","kind":"arxiv","version":1}},"canonical_sha256":"468e026579a70402fbc15dfd76cc4e94a5dc24915ed3e453aa659dca7089a7a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"468e026579a70402fbc15dfd76cc4e94a5dc24915ed3e453aa659dca7089a7a1","first_computed_at":"2026-05-18T04:24:07.107623Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:07.107623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nnRfsVExx3gDldfqBPlaooO0mvJySKSdVlaRAtgR7Fh2i7lbgxF6KZvZjskKO9nF0R3R0G4K3/VXwfK0GdMCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:07.108089Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.6519","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f15f88330ac5f1ac4edc363611875151f6c8947e4dfbeea32855b0afb55d2e38","sha256:343b86391f6066751491b59cac7d8139cd91756b7652d0b8e3d82fbea9c1bb0c"],"state_sha256":"0ff2186c10f19c1b6ea3c5108a55d6b119dab9e32492f123180ba4d434aedf32"}