{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ZR4QSTLFCJEBX3VGYHYWHKGIMZ","short_pith_number":"pith:ZR4QSTLF","canonical_record":{"source":{"id":"1903.04066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-10T22:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"56c6a0cad5b960fd17ecde29eb39feea3c9c2a473fbd3cfb4e36d340874fbfe5","abstract_canon_sha256":"73812795c9a91f792ff9c0b2695bb6b021ce3107c14ea7e1ebc35697753c2d6f"},"schema_version":"1.0"},"canonical_sha256":"cc79094d6512481beea6c1f163a8c8664c2d8322b24f9954dbed5f1577db138d","source":{"kind":"arxiv","id":"1903.04066","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04066","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04066v1","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04066","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZR4QSTLFCJEB","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZR4QSTLFCJEBX3VG","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZR4QSTLF","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ZR4QSTLFCJEBX3VGYHYWHKGIMZ","target":"record","payload":{"canonical_record":{"source":{"id":"1903.04066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-10T22:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"56c6a0cad5b960fd17ecde29eb39feea3c9c2a473fbd3cfb4e36d340874fbfe5","abstract_canon_sha256":"73812795c9a91f792ff9c0b2695bb6b021ce3107c14ea7e1ebc35697753c2d6f"},"schema_version":"1.0"},"canonical_sha256":"cc79094d6512481beea6c1f163a8c8664c2d8322b24f9954dbed5f1577db138d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:35.959819Z","signature_b64":"tHm6RU8vmnhhudZl9tBq2zKLPmP/moXzbg//JEug/hJekAeymVRmkiDsDVRvowfxA/KA6/l02GxqyXs1htOuAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc79094d6512481beea6c1f163a8c8664c2d8322b24f9954dbed5f1577db138d","last_reissued_at":"2026-05-17T23:50:35.959171Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:35.959171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.04066","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":"2026-05-17T23:50:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QgF5KhYZTIIPhQP5pPso9GN6C05jf9W7ZUdZdU0BlDSEwxWvdnCua6R9vrR+YQq5xo66A7Kx5SxPx5p1tVdDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:06:40.437537Z"},"content_sha256":"21a97d008bfba072979e67550d22a8581e8e7d4870b37457763b7a6c27306cb8","schema_version":"1.0","event_id":"sha256:21a97d008bfba072979e67550d22a8581e8e7d4870b37457763b7a6c27306cb8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ZR4QSTLFCJEBX3VGYHYWHKGIMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strong pinning in the hole-doped pnictide superconductor La$_{0.34}$Na$_{0.66}$Fe$_2$As$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A.D. Alvarenga, Huiqian Luo, Jr., L. Ghivelder, M. M. Doria, Shiliang Li, Shyam Sundar, S. Salem-Sugui, Yanhong Gu","submitted_at":"2019-03-10T22:03:17Z","abstract_excerpt":"We present magnetization studies as a function of time, temperature and magnetic field for $H$ $\\parallel$ c-axis, in a hole-doped pnictide superconductor, La$_{0.34}$Na$_{0.66}$Fe$_2$As$_2$, with, $T_c$ $\\approx$ 27 K. The obtained vortex phase-diagram shows that the magnetic irreversibility line is very close to the mean-field superconducting transition line, similar to the low $T_c$ superconductors, evidencing a strong pinning behavior. The irreversibility line does not follow a power law behavior with ($T_c$-$T$), however, it is well described using an expression developed in the literatur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04066","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":"2026-05-17T23:50:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H6EAaPTnJYtzamxiSBp9XNIOopwbMn/wgFSc5zXTCjcqztQho/tRl/ziCd0FwXF5BiLdFfgRCUfFt9kpqqfbBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:06:40.438182Z"},"content_sha256":"bc76219e5cbbab48fb77357b630c01ed5ae5480b4f34a847c9273425e6a893f4","schema_version":"1.0","event_id":"sha256:bc76219e5cbbab48fb77357b630c01ed5ae5480b4f34a847c9273425e6a893f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/bundle.json","state_url":"https://pith.science/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/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":"2026-05-26T16:06:40Z","links":{"resolver":"https://pith.science/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ","bundle":"https://pith.science/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/bundle.json","state":"https://pith.science/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZR4QSTLFCJEBX3VGYHYWHKGIMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZR4QSTLFCJEBX3VGYHYWHKGIMZ","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":"73812795c9a91f792ff9c0b2695bb6b021ce3107c14ea7e1ebc35697753c2d6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-10T22:03:17Z","title_canon_sha256":"56c6a0cad5b960fd17ecde29eb39feea3c9c2a473fbd3cfb4e36d340874fbfe5"},"schema_version":"1.0","source":{"id":"1903.04066","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04066","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04066v1","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04066","created_at":"2026-05-17T23:50:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZR4QSTLFCJEB","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZR4QSTLFCJEBX3VG","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZR4QSTLF","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:bc76219e5cbbab48fb77357b630c01ed5ae5480b4f34a847c9273425e6a893f4","target":"graph","created_at":"2026-05-17T23:50:35Z","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 present magnetization studies as a function of time, temperature and magnetic field for $H$ $\\parallel$ c-axis, in a hole-doped pnictide superconductor, La$_{0.34}$Na$_{0.66}$Fe$_2$As$_2$, with, $T_c$ $\\approx$ 27 K. The obtained vortex phase-diagram shows that the magnetic irreversibility line is very close to the mean-field superconducting transition line, similar to the low $T_c$ superconductors, evidencing a strong pinning behavior. The irreversibility line does not follow a power law behavior with ($T_c$-$T$), however, it is well described using an expression developed in the literatur","authors_text":"A.D. Alvarenga, Huiqian Luo, Jr., L. Ghivelder, M. M. Doria, Shiliang Li, Shyam Sundar, S. Salem-Sugui, Yanhong Gu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-10T22:03:17Z","title":"Strong pinning in the hole-doped pnictide superconductor La$_{0.34}$Na$_{0.66}$Fe$_2$As$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04066","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":"sha256:21a97d008bfba072979e67550d22a8581e8e7d4870b37457763b7a6c27306cb8","target":"record","created_at":"2026-05-17T23:50:35Z","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":"73812795c9a91f792ff9c0b2695bb6b021ce3107c14ea7e1ebc35697753c2d6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-10T22:03:17Z","title_canon_sha256":"56c6a0cad5b960fd17ecde29eb39feea3c9c2a473fbd3cfb4e36d340874fbfe5"},"schema_version":"1.0","source":{"id":"1903.04066","kind":"arxiv","version":1}},"canonical_sha256":"cc79094d6512481beea6c1f163a8c8664c2d8322b24f9954dbed5f1577db138d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc79094d6512481beea6c1f163a8c8664c2d8322b24f9954dbed5f1577db138d","first_computed_at":"2026-05-17T23:50:35.959171Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:35.959171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tHm6RU8vmnhhudZl9tBq2zKLPmP/moXzbg//JEug/hJekAeymVRmkiDsDVRvowfxA/KA6/l02GxqyXs1htOuAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:35.959819Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.04066","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:21a97d008bfba072979e67550d22a8581e8e7d4870b37457763b7a6c27306cb8","sha256:bc76219e5cbbab48fb77357b630c01ed5ae5480b4f34a847c9273425e6a893f4"],"state_sha256":"57910c25807bc4db4bce3085aba66b89a50197584bb75458562bbb8f1e9fc68e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WP0a/RU0VV6v4LlBGzl4E6cu2GPsszkbv2pCbfWC8b7gW48VNQdsFGFml5YtmC8dKUVAjl4LvGgHn2rnG/ZxCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T16:06:40.442373Z","bundle_sha256":"e245fbcb5bb3af39561427fccef9ade873b4dada7af604dae3010e7a03b711af"}}