{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:MZ276CMKEZ3P5MWZ6JGSBDDG74","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":"c2eb1d7c250bdf8ca7ee7640ffb2f5eaec8ad4a5baaf998f32f87d71e73b0d78","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-09-26T11:13:13Z","title_canon_sha256":"dc7355389af7886b409daeb2aa016f8b40c9a16aa896023b9b043eecc31d36ca"},"schema_version":"1.0","source":{"id":"0909.4855","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4855","created_at":"2026-07-04T15:54:26Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4855v2","created_at":"2026-07-04T15:54:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4855","created_at":"2026-07-04T15:54:26Z"},{"alias_kind":"pith_short_12","alias_value":"MZ276CMKEZ3P","created_at":"2026-07-04T15:54:26Z"},{"alias_kind":"pith_short_16","alias_value":"MZ276CMKEZ3P5MWZ","created_at":"2026-07-04T15:54:26Z"},{"alias_kind":"pith_short_8","alias_value":"MZ276CMK","created_at":"2026-07-04T15:54:26Z"}],"graph_snapshots":[{"event_id":"sha256:3a2ca459992ad8fe2b203ccb113e9f6ca809a4cd2fc315e679bc3919f190febf","target":"graph","created_at":"2026-07-04T15:54:26Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0909.4855/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The in-plane resistivity $\\rho$ and thermal conductivity $\\kappa$ of extremely overdoped KFe$_2$As$_2$ ($T_c$ = 3.0 K) single crystal were studied. It is found that $\\rho \\sim T^{1.5}$ at low temperature, a typical non-Fermi liquid behavior of electrons scattered by antiferromagnetic spin fluctuations. In zero field, we observed a large residual linear term $\\kappa_0/T$, about one third of the normal-state value. In low magnetic fields, $\\kappa_0/T(H)$ increases very fast. Such a behavior of $\\kappa_0/T$ mimics the d-wave cuprate superconductors, therefore provides clear evidence for nodes in ","authors_text":"H. Zhang, J. K. Dong, S. Y. Li, S. Y. Zhou, T. Y. Guan, X. F. Wang, X. H. Chen, X. Qiu, Y. F. Dai, Y. He","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-09-26T11:13:13Z","title":"Thermal conductivity study of KFe$_2$As$_2$ single crystal: clear evidence for unconventional superconducting gap with nodes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4855","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":"sha256:62e29bd19ca6a7f55b212e27fee20c69ed0a88f26e0d10a34d666d1759a65ec5","target":"record","created_at":"2026-07-04T15:54:26Z","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":"c2eb1d7c250bdf8ca7ee7640ffb2f5eaec8ad4a5baaf998f32f87d71e73b0d78","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-09-26T11:13:13Z","title_canon_sha256":"dc7355389af7886b409daeb2aa016f8b40c9a16aa896023b9b043eecc31d36ca"},"schema_version":"1.0","source":{"id":"0909.4855","kind":"arxiv","version":2}},"canonical_sha256":"6675ff098a2676feb2d9f24d208c66ff3decfb804b7218393de4fc4e0ad5cdf1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6675ff098a2676feb2d9f24d208c66ff3decfb804b7218393de4fc4e0ad5cdf1","first_computed_at":"2026-07-04T15:54:26.684264Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:54:26.684264Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5uYk4xkuvMWPzv0S3mRCrPwlNx3yUNYMvTsd9DNfnKNIzkhz+MHohdZk3N9WR4opC7Vp5Q/C2Yoc0LOmDURtBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:54:26.684734Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.4855","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62e29bd19ca6a7f55b212e27fee20c69ed0a88f26e0d10a34d666d1759a65ec5","sha256:3a2ca459992ad8fe2b203ccb113e9f6ca809a4cd2fc315e679bc3919f190febf"],"state_sha256":"ac790c8d0063b0b6a58f7b7fc2649b93c2daaab7a44cf27ba1ffe7eb7385d12d"}