{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ULTSPRMPCYMPTQW7DRNCNXZIPR","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":"5924b90c56df6df261938c647ffe6dafef01b58f2904600b7329a3e099ef2623","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-06-09T21:43:28Z","title_canon_sha256":"fbc4dfbd0c12d79b26e2733240edde3082348ca3f23fd91ffd2e14f362e0c531"},"schema_version":"1.0","source":{"id":"1406.2369","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.2369","created_at":"2026-05-18T02:38:26Z"},{"alias_kind":"arxiv_version","alias_value":"1406.2369v1","created_at":"2026-05-18T02:38:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.2369","created_at":"2026-05-18T02:38:26Z"},{"alias_kind":"pith_short_12","alias_value":"ULTSPRMPCYMP","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"ULTSPRMPCYMPTQW7","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"ULTSPRMP","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:ef613888c721558903036b77d5c63ca1040efffca357a6e0c7b29b3b8dbf2a95","target":"graph","created_at":"2026-05-18T02:38:26Z","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"},"paper":{"abstract_excerpt":"The in-plane London penetration depth, $\\Delta\\lambda(T)$, was measured using a tunnel diode resonator technique in single crystals of Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ with doping levels $x$ ranging from heavily underdoped, $x$=0.16 ($T_{c}$=7~K) to nearly optimally doped, $x$= 0.34 ($T_{c}=$39 K). Exponential saturation of $\\Delta\\lambda(T)$ in the $T\\to0$ limit is found in optimally doped samples, with the superfluid density $\\rho_{s}(T)\\equiv(\\lambda(0)/\\lambda(T))^{2}$ quantitatively described by a self-consistent $\\gamma$-model with two nodeless isotropic superconducting gaps. As the dop","authors_text":"Bing Shen, Hai-Hu Wen, H. Kim, J. Murphy, J.-Ph. Reid, K. Cho, M. A. Tanatar, N. Spyrison, R. M. Fernandes, R. Prozorov, W. E. Straszheim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-06-09T21:43:28Z","title":"Competition between superconductivity and magnetic/nematic order as a source of anisotropic superconducting gap in underdoped Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.2369","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":"sha256:1fd432aa9fc7fa0a18bed600fd304d2aeb9923fc574738b7739a4158326f8455","target":"record","created_at":"2026-05-18T02:38:26Z","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":"5924b90c56df6df261938c647ffe6dafef01b58f2904600b7329a3e099ef2623","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-06-09T21:43:28Z","title_canon_sha256":"fbc4dfbd0c12d79b26e2733240edde3082348ca3f23fd91ffd2e14f362e0c531"},"schema_version":"1.0","source":{"id":"1406.2369","kind":"arxiv","version":1}},"canonical_sha256":"a2e727c58f1618f9c2df1c5a26df287c6321099a1d09b35289dc3c994574a7d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2e727c58f1618f9c2df1c5a26df287c6321099a1d09b35289dc3c994574a7d1","first_computed_at":"2026-05-18T02:38:26.337226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:38:26.337226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o2iw2cBX9yv23N5GughNp7n4HAhybxNmC9bhGaqjwnMiu4hjbHqNk1MnKwhEbj9a/Dv5dA/r9rT31DVP4KI2Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:38:26.338093Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.2369","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fd432aa9fc7fa0a18bed600fd304d2aeb9923fc574738b7739a4158326f8455","sha256:ef613888c721558903036b77d5c63ca1040efffca357a6e0c7b29b3b8dbf2a95"],"state_sha256":"d4089cdcce5350ba0d8e98b59ae70eccedaae8dc556afb1b6e7d3ab075f288fc"}