{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:44ZXFNPN4KFHKUOM6GX46LAERZ","short_pith_number":"pith:44ZXFNPN","schema_version":"1.0","canonical_sha256":"e73372b5ede28a7551ccf1afcf2c048e5302a8fd80043e8881653f6a5075fa8c","source":{"kind":"arxiv","id":"1301.5257","version":3},"attestation_state":"computed","paper":{"title":"Evidence of d-wave Superconductivity in K_(1-x)Na_xFe_2As_2 (x = 0, 0.1) Single Crystals from Low-Temperature Specific Heat Measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Reifenberger, A. U. B. Wolter, B. Buechner, C. Enss, C. Hess, D. V. Efremov, E. L. Green, H. Rosner, I. Morozov, J. van den Brink, J. Wosnitza, M. Abdel-Hafiez, M. Hempel, M. Kumar, M. Roslova, O. Vakaliuk, P. Vogt, R. Klingeler, S. Aswartham, S. Johnston, S.-L. Drechsler, S. Wurmehl, V. Grinenko","submitted_at":"2013-01-22T18:00:04Z","abstract_excerpt":"From the measurement and analysis of the specific heat of high-quality K_(1-x)Na_xFe_2As_2 single crystals we establish the presence of large T^2 contributions with coefficients alpha_sc ~ 30 mJ/mol K^3 at low-T for both x=0 and 0.1. Together with the observed square root field behavior of the specific heat in the superconducting state both findings evidence d-wave superconductivity on almost all Fermi surface sheets with an average gap amplitude of Delta_0 in the range of 0.4 - 0.8 meV. The derived Delta_0 and the observed T_c agree well with the values calculated within the Eliashberg theory"},"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":"1301.5257","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-01-22T18:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"69e88d6508411dbb2c22a9569ece03630dbb3bcf3dc266d4eee26ce8440cc65d","abstract_canon_sha256":"ba1b50b16b789c9ba6aca488564a81d4b6b5013f29690aea92b1ab14045daaae"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:04.605563Z","signature_b64":"eNSIe89k+AzY9xahYcs5WzwvhmoT06dSGqSSOTULTA/fV4dh706maI40QOQ97xLtzszDUFw9TP3E0RCc07MDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e73372b5ede28a7551ccf1afcf2c048e5302a8fd80043e8881653f6a5075fa8c","last_reissued_at":"2026-05-18T01:52:04.605033Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:04.605033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence of d-wave Superconductivity in K_(1-x)Na_xFe_2As_2 (x = 0, 0.1) Single Crystals from Low-Temperature Specific Heat Measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Reifenberger, A. U. B. Wolter, B. Buechner, C. Enss, C. Hess, D. V. Efremov, E. L. Green, H. Rosner, I. Morozov, J. van den Brink, J. Wosnitza, M. Abdel-Hafiez, M. Hempel, M. Kumar, M. Roslova, O. Vakaliuk, P. Vogt, R. Klingeler, S. Aswartham, S. Johnston, S.-L. Drechsler, S. Wurmehl, V. Grinenko","submitted_at":"2013-01-22T18:00:04Z","abstract_excerpt":"From the measurement and analysis of the specific heat of high-quality K_(1-x)Na_xFe_2As_2 single crystals we establish the presence of large T^2 contributions with coefficients alpha_sc ~ 30 mJ/mol K^3 at low-T for both x=0 and 0.1. Together with the observed square root field behavior of the specific heat in the superconducting state both findings evidence d-wave superconductivity on almost all Fermi surface sheets with an average gap amplitude of Delta_0 in the range of 0.4 - 0.8 meV. The derived Delta_0 and the observed T_c agree well with the values calculated within the Eliashberg theory"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5257","kind":"arxiv","version":3},"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":"1301.5257","created_at":"2026-05-18T01:52:04.605128+00:00"},{"alias_kind":"arxiv_version","alias_value":"1301.5257v3","created_at":"2026-05-18T01:52:04.605128+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5257","created_at":"2026-05-18T01:52:04.605128+00:00"},{"alias_kind":"pith_short_12","alias_value":"44ZXFNPN4KFH","created_at":"2026-05-18T12:27:32.513160+00:00"},{"alias_kind":"pith_short_16","alias_value":"44ZXFNPN4KFHKUOM","created_at":"2026-05-18T12:27:32.513160+00:00"},{"alias_kind":"pith_short_8","alias_value":"44ZXFNPN","created_at":"2026-05-18T12:27:32.513160+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/44ZXFNPN4KFHKUOM6GX46LAERZ","json":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ.json","graph_json":"https://pith.science/api/pith-number/44ZXFNPN4KFHKUOM6GX46LAERZ/graph.json","events_json":"https://pith.science/api/pith-number/44ZXFNPN4KFHKUOM6GX46LAERZ/events.json","paper":"https://pith.science/paper/44ZXFNPN"},"agent_actions":{"view_html":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ","download_json":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ.json","view_paper":"https://pith.science/paper/44ZXFNPN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1301.5257&json=true","fetch_graph":"https://pith.science/api/pith-number/44ZXFNPN4KFHKUOM6GX46LAERZ/graph.json","fetch_events":"https://pith.science/api/pith-number/44ZXFNPN4KFHKUOM6GX46LAERZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ/action/storage_attestation","attest_author":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ/action/author_attestation","sign_citation":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ/action/citation_signature","submit_replication":"https://pith.science/pith/44ZXFNPN4KFHKUOM6GX46LAERZ/action/replication_record"}},"created_at":"2026-05-18T01:52:04.605128+00:00","updated_at":"2026-05-18T01:52:04.605128+00:00"}