{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:KC62IJ36IHFZHSUU7NYRKLM3AQ","short_pith_number":"pith:KC62IJ36","canonical_record":{"source":{"id":"2305.15803","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-05-25T07:36:51Z","cross_cats_sorted":[],"title_canon_sha256":"a03e64822e2564c8215bb7d2fecc29a508f203373e4979baf72a959dce202e9c","abstract_canon_sha256":"45b9c696b6a5e09cb3733ed7be72ded8c6511675b68c75d7bd16889281b0b7ac"},"schema_version":"1.0"},"canonical_sha256":"50bda4277e41cb93ca94fb71152d9b042f002edbcdb77864f8388cb9d7880d38","source":{"kind":"arxiv","id":"2305.15803","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.15803","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"2305.15803v1","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.15803","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"KC62IJ36IHFZ","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_16","alias_value":"KC62IJ36IHFZHSUU","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_8","alias_value":"KC62IJ36","created_at":"2026-07-05T06:16:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:KC62IJ36IHFZHSUU7NYRKLM3AQ","target":"record","payload":{"canonical_record":{"source":{"id":"2305.15803","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-05-25T07:36:51Z","cross_cats_sorted":[],"title_canon_sha256":"a03e64822e2564c8215bb7d2fecc29a508f203373e4979baf72a959dce202e9c","abstract_canon_sha256":"45b9c696b6a5e09cb3733ed7be72ded8c6511675b68c75d7bd16889281b0b7ac"},"schema_version":"1.0"},"canonical_sha256":"50bda4277e41cb93ca94fb71152d9b042f002edbcdb77864f8388cb9d7880d38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:16:18.771625Z","signature_b64":"qM3pUShSBS7LEkP+oMFphIsg26Vpbq6vpktd7jGJPFZ6m3hlFOgDsxoRptrkw61vo76gFmDN97onfUmOlMJICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50bda4277e41cb93ca94fb71152d9b042f002edbcdb77864f8388cb9d7880d38","last_reissued_at":"2026-07-05T06:16:18.771151Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:16:18.771151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.15803","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":"2026-07-05T06:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sR+dXpuqcVdhR9GXFjF7XwGzM7PZgQAv5uW5GN0JmT/X1K15+wO27jaYGxBkejvf0sEp8Eb0Z8x3Z5qLWhItCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T08:47:58.363469Z"},"content_sha256":"9265add20a3b7e14aff07e69e1819aba2d482a6e02c7e6024b108dc6732402a4","schema_version":"1.0","event_id":"sha256:9265add20a3b7e14aff07e69e1819aba2d482a6e02c7e6024b108dc6732402a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:KC62IJ36IHFZHSUU7NYRKLM3AQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct observation of oxygen polarization in Sr$_2$IrO$_4$ by O $K$-edge x-ray magnetic circular dichroism","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Koda, H. Nakao, H. Okabe, K. Amemiya, M. Hiraishi, M. Miyazaki, R. Kadono","submitted_at":"2023-05-25T07:36:51Z","abstract_excerpt":"X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) measurements at the oxygen (O) $K$-edge were performed to investigate the magnetic polarization of ligand O atoms in the weak ferromagnetic (WFM) phase of the Ir perovskite compound Sr$_2$IrO$_4$. With the onset of the WFM phase below $T_{\\rm N}\\simeq240$ K, XMCD signals corresponding to XAS peaks respectively identified as originating from the magnetic moments of apical and planar oxygen (O$_{\\rm A}$ and O$_{\\rm P}$) in the IrO$_6$ octahedra were observed. The observation of magnetic moments at O$_{\\rm A}$ sites is con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.15803","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2305.15803/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KFpcRhBadT9DIFBZB854W9WqhrLannfF5vEBJmQPmNz8cHFZiYbsk6geppaCiaAWMraMqMiegeYIaUZ833bBAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T08:47:58.364373Z"},"content_sha256":"ba524a8db18c61250dcbdcfeaf7b3dc14db753e5450875e45f19954fe310c4a6","schema_version":"1.0","event_id":"sha256:ba524a8db18c61250dcbdcfeaf7b3dc14db753e5450875e45f19954fe310c4a6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/bundle.json","state_url":"https://pith.science/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/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":"2026-08-10T08:47:58Z","links":{"resolver":"https://pith.science/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ","bundle":"https://pith.science/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/bundle.json","state":"https://pith.science/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KC62IJ36IHFZHSUU7NYRKLM3AQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:KC62IJ36IHFZHSUU7NYRKLM3AQ","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":"45b9c696b6a5e09cb3733ed7be72ded8c6511675b68c75d7bd16889281b0b7ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-05-25T07:36:51Z","title_canon_sha256":"a03e64822e2564c8215bb7d2fecc29a508f203373e4979baf72a959dce202e9c"},"schema_version":"1.0","source":{"id":"2305.15803","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.15803","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"2305.15803v1","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.15803","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"KC62IJ36IHFZ","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_16","alias_value":"KC62IJ36IHFZHSUU","created_at":"2026-07-05T06:16:18Z"},{"alias_kind":"pith_short_8","alias_value":"KC62IJ36","created_at":"2026-07-05T06:16:18Z"}],"graph_snapshots":[{"event_id":"sha256:ba524a8db18c61250dcbdcfeaf7b3dc14db753e5450875e45f19954fe310c4a6","target":"graph","created_at":"2026-07-05T06:16:18Z","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/2305.15803/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) measurements at the oxygen (O) $K$-edge were performed to investigate the magnetic polarization of ligand O atoms in the weak ferromagnetic (WFM) phase of the Ir perovskite compound Sr$_2$IrO$_4$. With the onset of the WFM phase below $T_{\\rm N}\\simeq240$ K, XMCD signals corresponding to XAS peaks respectively identified as originating from the magnetic moments of apical and planar oxygen (O$_{\\rm A}$ and O$_{\\rm P}$) in the IrO$_6$ octahedra were observed. The observation of magnetic moments at O$_{\\rm A}$ sites is con","authors_text":"A. Koda, H. Nakao, H. Okabe, K. Amemiya, M. Hiraishi, M. Miyazaki, R. Kadono","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-05-25T07:36:51Z","title":"Direct observation of oxygen polarization in Sr$_2$IrO$_4$ by O $K$-edge x-ray magnetic circular dichroism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.15803","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":"sha256:9265add20a3b7e14aff07e69e1819aba2d482a6e02c7e6024b108dc6732402a4","target":"record","created_at":"2026-07-05T06:16:18Z","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":"45b9c696b6a5e09cb3733ed7be72ded8c6511675b68c75d7bd16889281b0b7ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-05-25T07:36:51Z","title_canon_sha256":"a03e64822e2564c8215bb7d2fecc29a508f203373e4979baf72a959dce202e9c"},"schema_version":"1.0","source":{"id":"2305.15803","kind":"arxiv","version":1}},"canonical_sha256":"50bda4277e41cb93ca94fb71152d9b042f002edbcdb77864f8388cb9d7880d38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50bda4277e41cb93ca94fb71152d9b042f002edbcdb77864f8388cb9d7880d38","first_computed_at":"2026-07-05T06:16:18.771151Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:16:18.771151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qM3pUShSBS7LEkP+oMFphIsg26Vpbq6vpktd7jGJPFZ6m3hlFOgDsxoRptrkw61vo76gFmDN97onfUmOlMJICw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:16:18.771625Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.15803","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9265add20a3b7e14aff07e69e1819aba2d482a6e02c7e6024b108dc6732402a4","sha256:ba524a8db18c61250dcbdcfeaf7b3dc14db753e5450875e45f19954fe310c4a6"],"state_sha256":"1b6af57afc29fb01638787c1d987161de6ce3bad4a7c61d5cd320ccce15778d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AgmP143KC1iWTS2iO4zPw+xk5QzrzRCcXsehqgonw1Pz/jczFUarndvWNbfF+8VsBkntScpzkIhCYJw/DQ07Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T08:47:58.370480Z","bundle_sha256":"2620a8bc8ccf31f6e411cc4f43f20da020153a379ab544475695239180273671"}}