{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VAKJT4ZKJOBN5TRNGSUGCJOV3Q","short_pith_number":"pith:VAKJT4ZK","canonical_record":{"source":{"id":"1804.06963","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-19T01:28:26Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"e265b1804d12b8e7e5aadf5ba3f329b862fc9ebea22430cfdadf87fbe9e258c5","abstract_canon_sha256":"465f1263f5b1b70756a4cd1defc99d6234f76dcba4ad5f8c4b63e1529ade8527"},"schema_version":"1.0"},"canonical_sha256":"a81499f32a4b82dece2d34a86125d5dc380b42c1ad08ed5d78029caf5b675f92","source":{"kind":"arxiv","id":"1804.06963","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06963","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06963v1","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06963","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"VAKJT4ZKJOBN","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VAKJT4ZKJOBN5TRN","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VAKJT4ZK","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VAKJT4ZKJOBN5TRNGSUGCJOV3Q","target":"record","payload":{"canonical_record":{"source":{"id":"1804.06963","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-19T01:28:26Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"e265b1804d12b8e7e5aadf5ba3f329b862fc9ebea22430cfdadf87fbe9e258c5","abstract_canon_sha256":"465f1263f5b1b70756a4cd1defc99d6234f76dcba4ad5f8c4b63e1529ade8527"},"schema_version":"1.0"},"canonical_sha256":"a81499f32a4b82dece2d34a86125d5dc380b42c1ad08ed5d78029caf5b675f92","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:06.195239Z","signature_b64":"Cvre2D5+v+Qo5Dl6HKSgkIjpAxbGMqki7T+HIJbYzBqVSP2jKYyi+GAsLMV2myRi6bxlhRHmgp3dzLMVpojlAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a81499f32a4b82dece2d34a86125d5dc380b42c1ad08ed5d78029caf5b675f92","last_reissued_at":"2026-05-18T00:03:06.194542Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:06.194542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.06963","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"09/dysrwNd2u5RKwR0WZAZE7fA+xGQR/yKk3gM6pZPJZ2vDnbDXNyJVU5vbjGquVja/10ZUHZ9leAq7B9udQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:40:37.245896Z"},"content_sha256":"5dbe5b0c2f87f9debd378819588717e5cd7c0f91f7c28062c1048df94dfae926","schema_version":"1.0","event_id":"sha256:5dbe5b0c2f87f9debd378819588717e5cd7c0f91f7c28062c1048df94dfae926"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VAKJT4ZKJOBN5TRNGSUGCJOV3Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High Tc superconductivity in CaKFe$_4$As$_4$ in absence of nematic fluctuations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"G. Blumberg, P. C. Canfield, T. Kong, W.-L. Zhang, W. R. Meier","submitted_at":"2018-04-19T01:28:26Z","abstract_excerpt":"We employ polarization-resolved Raman spectroscopy to study multi-band stoichiometric superconductor CaKFe$_4$As$_4$. The B$_{2g}$ symmetry Raman response shows no signatures of Pomeranchuk-like electronic nematic fluctuations which is observed for many other Fe-based superconductors. In the superconducting state, we identify three pair-breaking peaks at 13.8, 16.9 and 21 meV and full spectral weight suppression at low energies. The pair-breaking peak energies in Raman response are about 20% lower than twice the gap energies as measured by single-particle spectroscopy, implying a sub-dominant "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06963","kind":"arxiv","version":1},"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":"2026-05-18T00:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gqwb/CAKEfjEqe5acJowBK0No4GdU01ECx9uaG3K6XJ3MqOJ+EkG9wutk3fTNa61fZFJJW50ne7lDf+RLpfqCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:40:37.246237Z"},"content_sha256":"9fd13b5f1493656fb20863dd3baea6cb18e999bd997431d6c61c089bdc1167f2","schema_version":"1.0","event_id":"sha256:9fd13b5f1493656fb20863dd3baea6cb18e999bd997431d6c61c089bdc1167f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/bundle.json","state_url":"https://pith.science/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/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":"2026-05-28T01:40:37Z","links":{"resolver":"https://pith.science/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q","bundle":"https://pith.science/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/bundle.json","state":"https://pith.science/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VAKJT4ZKJOBN5TRNGSUGCJOV3Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VAKJT4ZKJOBN5TRNGSUGCJOV3Q","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":"465f1263f5b1b70756a4cd1defc99d6234f76dcba4ad5f8c4b63e1529ade8527","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-19T01:28:26Z","title_canon_sha256":"e265b1804d12b8e7e5aadf5ba3f329b862fc9ebea22430cfdadf87fbe9e258c5"},"schema_version":"1.0","source":{"id":"1804.06963","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06963","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06963v1","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06963","created_at":"2026-05-18T00:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"VAKJT4ZKJOBN","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VAKJT4ZKJOBN5TRN","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VAKJT4ZK","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:9fd13b5f1493656fb20863dd3baea6cb18e999bd997431d6c61c089bdc1167f2","target":"graph","created_at":"2026-05-18T00:03:06Z","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 employ polarization-resolved Raman spectroscopy to study multi-band stoichiometric superconductor CaKFe$_4$As$_4$. The B$_{2g}$ symmetry Raman response shows no signatures of Pomeranchuk-like electronic nematic fluctuations which is observed for many other Fe-based superconductors. In the superconducting state, we identify three pair-breaking peaks at 13.8, 16.9 and 21 meV and full spectral weight suppression at low energies. The pair-breaking peak energies in Raman response are about 20% lower than twice the gap energies as measured by single-particle spectroscopy, implying a sub-dominant ","authors_text":"G. Blumberg, P. C. Canfield, T. Kong, W.-L. Zhang, W. R. Meier","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-19T01:28:26Z","title":"High Tc superconductivity in CaKFe$_4$As$_4$ in absence of nematic fluctuations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06963","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":"sha256:5dbe5b0c2f87f9debd378819588717e5cd7c0f91f7c28062c1048df94dfae926","target":"record","created_at":"2026-05-18T00:03:06Z","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":"465f1263f5b1b70756a4cd1defc99d6234f76dcba4ad5f8c4b63e1529ade8527","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-19T01:28:26Z","title_canon_sha256":"e265b1804d12b8e7e5aadf5ba3f329b862fc9ebea22430cfdadf87fbe9e258c5"},"schema_version":"1.0","source":{"id":"1804.06963","kind":"arxiv","version":1}},"canonical_sha256":"a81499f32a4b82dece2d34a86125d5dc380b42c1ad08ed5d78029caf5b675f92","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a81499f32a4b82dece2d34a86125d5dc380b42c1ad08ed5d78029caf5b675f92","first_computed_at":"2026-05-18T00:03:06.194542Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:06.194542Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cvre2D5+v+Qo5Dl6HKSgkIjpAxbGMqki7T+HIJbYzBqVSP2jKYyi+GAsLMV2myRi6bxlhRHmgp3dzLMVpojlAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:06.195239Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.06963","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5dbe5b0c2f87f9debd378819588717e5cd7c0f91f7c28062c1048df94dfae926","sha256:9fd13b5f1493656fb20863dd3baea6cb18e999bd997431d6c61c089bdc1167f2"],"state_sha256":"1bf26c98aae87fc5be71a6ceb6204d394c382d40d76e9eae0f8a551fb3f1994c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tRDQoXf3eHj2/gPY1NgkG1Y6iJPk0brbgkKIdVh/vcH2D/I6kX1MFknqdlnD9qH6f3Tnq+wYC4x9TeRhdDOfDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T01:40:37.248415Z","bundle_sha256":"02e991b50f39df6e03afa4c73ea7179776ffb68b0fd1985b0c81eaf7ea784059"}}