{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:SR6XQE5YDD6HOJ5QOBWH5MCU6M","short_pith_number":"pith:SR6XQE5Y","canonical_record":{"source":{"id":"0906.0138","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-05-31T06:39:45Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"43f60f40ea444282242e2537afec4e43ee6e4614bac79094fba012fb23f10ab8","abstract_canon_sha256":"b61e92b1c11b62c3a2f40a94c00a500dcd4ddd5276760b0b7c8aede8c05f867f"},"schema_version":"1.0"},"canonical_sha256":"947d7813b818fc7727b0706c7eb054f33fdcd8ae8ba53b68dbb026c83836d4e3","source":{"kind":"arxiv","id":"0906.0138","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0138","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0138v2","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0138","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"pith_short_12","alias_value":"SR6XQE5YDD6H","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SR6XQE5YDD6HOJ5Q","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SR6XQE5Y","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:SR6XQE5YDD6HOJ5QOBWH5MCU6M","target":"record","payload":{"canonical_record":{"source":{"id":"0906.0138","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-05-31T06:39:45Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"43f60f40ea444282242e2537afec4e43ee6e4614bac79094fba012fb23f10ab8","abstract_canon_sha256":"b61e92b1c11b62c3a2f40a94c00a500dcd4ddd5276760b0b7c8aede8c05f867f"},"schema_version":"1.0"},"canonical_sha256":"947d7813b818fc7727b0706c7eb054f33fdcd8ae8ba53b68dbb026c83836d4e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:30.328783Z","signature_b64":"4zCYmAiJlqTBtlvuR2vPYF7AgrDY9mzBqD/hCzyhm0zOWwXy6HdUgb2OQvNmxah03sb8dDtb0WpPMIX8pOm+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"947d7813b818fc7727b0706c7eb054f33fdcd8ae8ba53b68dbb026c83836d4e3","last_reissued_at":"2026-05-18T02:13:30.328205Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:30.328205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.0138","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":"2026-05-18T02:13:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1LHRutsteARPY7ByAtXXt7tuB00ebWLi0fRyLBef02Z4gnAnaLg2sULZ9kWV7ojUEHYPfsmWvaUpgzQey4ENAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:10:22.318726Z"},"content_sha256":"bb5f4fb548c458b496c50318c45e939f2eaa4e742b95a11ef486b5a993107e10","schema_version":"1.0","event_id":"sha256:bb5f4fb548c458b496c50318c45e939f2eaa4e742b95a11ef486b5a993107e10"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:SR6XQE5YDD6HOJ5QOBWH5MCU6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nodeless superconducting gap in electron-doped BaFe$_{1.9}$Ni$_{0.1}$As$_2$ probed by quasiparticle heat transport","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"C. Zhang, G. H. Cao, J. K. Dong, L. Ding, L. J. Li, S. Y. Li, S. Y. Zhou, T. Y. Guan, X. Lin, X. Qiu, Z. A. Xu","submitted_at":"2009-05-31T06:39:45Z","abstract_excerpt":"The in-plane thermal conductivity $\\kappa$ of electron-doped iron-arsenide superconductor BaFe$_{1.9}$Ni$_{0.1}$As$_2$ ($T_c$ = 20.3 K) single crystal was measured down to 70 mK. In zero field, the absence of a residual linear term $\\kappa_0/T$ at $ T \\to 0$ is strong evidence for nodeless superconducting gap. In magnetic field, $\\kappa_0/T$ shows a slow field dependence up to $H$ = 14.5 T ($\\approx$ 30% $H_{c_2}$). This is consistent with the superconducting gap structure demonstrated by angle-resolved photoemission spectroscopy experiments in BaFe$_{1.85}$Co$_{0.15}$As$_2$ ($T_c$ = 25.5 K), "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0138","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:13:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cx8wYuky+SW+NxqNx01ihASNX/YuT3+5k77O8L8p0Pj07qmDH78zOYTFLCRnPziCUm+cGtN5CV6RSktZd0DZDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:10:22.319492Z"},"content_sha256":"5d0e934a00f7dd0e441e79fc8371156414f78f779ccd433a5361d6ee94e31e4f","schema_version":"1.0","event_id":"sha256:5d0e934a00f7dd0e441e79fc8371156414f78f779ccd433a5361d6ee94e31e4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/bundle.json","state_url":"https://pith.science/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/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":"2026-05-30T00:10:22Z","links":{"resolver":"https://pith.science/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M","bundle":"https://pith.science/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/bundle.json","state":"https://pith.science/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SR6XQE5YDD6HOJ5QOBWH5MCU6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:SR6XQE5YDD6HOJ5QOBWH5MCU6M","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":"b61e92b1c11b62c3a2f40a94c00a500dcd4ddd5276760b0b7c8aede8c05f867f","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-05-31T06:39:45Z","title_canon_sha256":"43f60f40ea444282242e2537afec4e43ee6e4614bac79094fba012fb23f10ab8"},"schema_version":"1.0","source":{"id":"0906.0138","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0138","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0138v2","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0138","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"pith_short_12","alias_value":"SR6XQE5YDD6H","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SR6XQE5YDD6HOJ5Q","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SR6XQE5Y","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:5d0e934a00f7dd0e441e79fc8371156414f78f779ccd433a5361d6ee94e31e4f","target":"graph","created_at":"2026-05-18T02:13:30Z","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":"The in-plane thermal conductivity $\\kappa$ of electron-doped iron-arsenide superconductor BaFe$_{1.9}$Ni$_{0.1}$As$_2$ ($T_c$ = 20.3 K) single crystal was measured down to 70 mK. In zero field, the absence of a residual linear term $\\kappa_0/T$ at $ T \\to 0$ is strong evidence for nodeless superconducting gap. In magnetic field, $\\kappa_0/T$ shows a slow field dependence up to $H$ = 14.5 T ($\\approx$ 30% $H_{c_2}$). This is consistent with the superconducting gap structure demonstrated by angle-resolved photoemission spectroscopy experiments in BaFe$_{1.85}$Co$_{0.15}$As$_2$ ($T_c$ = 25.5 K), ","authors_text":"C. Zhang, G. H. Cao, J. K. Dong, L. Ding, L. J. Li, S. Y. Li, S. Y. Zhou, T. Y. Guan, X. Lin, X. Qiu, Z. A. Xu","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-05-31T06:39:45Z","title":"Nodeless superconducting gap in electron-doped BaFe$_{1.9}$Ni$_{0.1}$As$_2$ probed by quasiparticle heat transport"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0138","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:bb5f4fb548c458b496c50318c45e939f2eaa4e742b95a11ef486b5a993107e10","target":"record","created_at":"2026-05-18T02:13:30Z","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":"b61e92b1c11b62c3a2f40a94c00a500dcd4ddd5276760b0b7c8aede8c05f867f","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-05-31T06:39:45Z","title_canon_sha256":"43f60f40ea444282242e2537afec4e43ee6e4614bac79094fba012fb23f10ab8"},"schema_version":"1.0","source":{"id":"0906.0138","kind":"arxiv","version":2}},"canonical_sha256":"947d7813b818fc7727b0706c7eb054f33fdcd8ae8ba53b68dbb026c83836d4e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"947d7813b818fc7727b0706c7eb054f33fdcd8ae8ba53b68dbb026c83836d4e3","first_computed_at":"2026-05-18T02:13:30.328205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:30.328205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4zCYmAiJlqTBtlvuR2vPYF7AgrDY9mzBqD/hCzyhm0zOWwXy6HdUgb2OQvNmxah03sb8dDtb0WpPMIX8pOm+CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:30.328783Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.0138","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb5f4fb548c458b496c50318c45e939f2eaa4e742b95a11ef486b5a993107e10","sha256:5d0e934a00f7dd0e441e79fc8371156414f78f779ccd433a5361d6ee94e31e4f"],"state_sha256":"fb386c05ec27f12d29ea2f8ae53ee9e47c5fea46d94b89f78c3232de6a4e04e0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HV3K3YQTMa8ysaRstHgi1jSmvMLhG8+lrF6pvY9bY3HrJUGbhS9B42FR1KKVeI6y039r3ZwOz3WFuqRIE7woBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:10:22.323607Z","bundle_sha256":"c987960d365e917c5939d4e605bb00f2ce9d1d72b54381a2dc42e7cedf4e8237"}}