{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NPQE6NRNDXSNSGTRBOMAC27D5D","short_pith_number":"pith:NPQE6NRN","canonical_record":{"source":{"id":"1810.01684","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-10-03T10:56:25Z","cross_cats_sorted":[],"title_canon_sha256":"56e5dcfc435dd2e6239a8ea8086c3793080106921f3a3a5b7caaefc46fc21a96","abstract_canon_sha256":"1f2cf54ee3b2e7ac9b17e94420999ce1afdad585b6b6f5966b0de035f67e5cc1"},"schema_version":"1.0"},"canonical_sha256":"6be04f362d1de4d91a710b98016be3e8d48117ecc91722f5da4ee9dad7c613f9","source":{"kind":"arxiv","id":"1810.01684","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.01684","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"1810.01684v1","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.01684","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"NPQE6NRNDXSN","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NPQE6NRNDXSNSGTR","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NPQE6NRN","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NPQE6NRNDXSNSGTRBOMAC27D5D","target":"record","payload":{"canonical_record":{"source":{"id":"1810.01684","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-10-03T10:56:25Z","cross_cats_sorted":[],"title_canon_sha256":"56e5dcfc435dd2e6239a8ea8086c3793080106921f3a3a5b7caaefc46fc21a96","abstract_canon_sha256":"1f2cf54ee3b2e7ac9b17e94420999ce1afdad585b6b6f5966b0de035f67e5cc1"},"schema_version":"1.0"},"canonical_sha256":"6be04f362d1de4d91a710b98016be3e8d48117ecc91722f5da4ee9dad7c613f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:04.803789Z","signature_b64":"CCIzBgeCW1iGWtB1JY7CHaFkTtCIPLV8fUsZHE+MAlMIfz6HFK3xMuHLp2Y8QT12G2d1tatUlp8Nt4CCZ7qHAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6be04f362d1de4d91a710b98016be3e8d48117ecc91722f5da4ee9dad7c613f9","last_reissued_at":"2026-05-17T23:59:04.803213Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:04.803213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.01684","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":"2026-05-17T23:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rv9LiUtH2a0PaRt/KphQHiPIj4vveobCZ+OkVNkbcq0ZJPGM+J+G1/VfeGtryz0YFQwogvWOvCUdz+jKzAqrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:52:14.669440Z"},"content_sha256":"3c3956b6a47a5846284ebebd6dcb2f4648014517984fe595fb4201801c9f8db3","schema_version":"1.0","event_id":"sha256:3c3956b6a47a5846284ebebd6dcb2f4648014517984fe595fb4201801c9f8db3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NPQE6NRNDXSNSGTRBOMAC27D5D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nuclear and Magnetic Structures of the Frustrated Quantum Antiferromagnet Barlowite, Cu$_{4}$(OH)$_{6}$FBr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. Ritter, G. J. Nilsen, I. da Silva, K. Tustain, L. Clark","submitted_at":"2018-10-03T10:56:25Z","abstract_excerpt":"Barlowite, Cu$_{4}$(OH)$_{6}$FBr, has attracted much attention as the parent compound of a new series of quantum spin liquid candidates, Zn$_{x}$Cu$_{4-x}$(OH)$_{6}$FBr. While it is known to undergo a magnetic phase transition to a long-range ordered state at $T_{N} = 15$ K, there is still no consensus over either its nuclear or magnetic structures. Here, we use comprehensive powder neutron diffraction studies on deuterated samples of barlowite to demonstrate that the only space group consistent with the observed nuclear and magnetic diffraction at low-temperatures is the orthorhombic $Pnma$ s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.01684","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":"2026-05-17T23:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xvNy0mgz1Zav+rvPpmM4CmGNQjx41Z831xVA54Kku4Pa2mgDupBrGYzfMA3qoCCNe4LcTmRqz+EXokHa2YE9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:52:14.669795Z"},"content_sha256":"d23870ef034efd8be491119d3f193dc5bececde7f4fa005715978c07ea907fc4","schema_version":"1.0","event_id":"sha256:d23870ef034efd8be491119d3f193dc5bececde7f4fa005715978c07ea907fc4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/bundle.json","state_url":"https://pith.science/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/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":"2026-06-02T08:52:14Z","links":{"resolver":"https://pith.science/pith/NPQE6NRNDXSNSGTRBOMAC27D5D","bundle":"https://pith.science/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/bundle.json","state":"https://pith.science/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NPQE6NRNDXSNSGTRBOMAC27D5D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NPQE6NRNDXSNSGTRBOMAC27D5D","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":"1f2cf54ee3b2e7ac9b17e94420999ce1afdad585b6b6f5966b0de035f67e5cc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-10-03T10:56:25Z","title_canon_sha256":"56e5dcfc435dd2e6239a8ea8086c3793080106921f3a3a5b7caaefc46fc21a96"},"schema_version":"1.0","source":{"id":"1810.01684","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.01684","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"1810.01684v1","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.01684","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"NPQE6NRNDXSN","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NPQE6NRNDXSNSGTR","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NPQE6NRN","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:d23870ef034efd8be491119d3f193dc5bececde7f4fa005715978c07ea907fc4","target":"graph","created_at":"2026-05-17T23:59:04Z","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":"Barlowite, Cu$_{4}$(OH)$_{6}$FBr, has attracted much attention as the parent compound of a new series of quantum spin liquid candidates, Zn$_{x}$Cu$_{4-x}$(OH)$_{6}$FBr. While it is known to undergo a magnetic phase transition to a long-range ordered state at $T_{N} = 15$ K, there is still no consensus over either its nuclear or magnetic structures. Here, we use comprehensive powder neutron diffraction studies on deuterated samples of barlowite to demonstrate that the only space group consistent with the observed nuclear and magnetic diffraction at low-temperatures is the orthorhombic $Pnma$ s","authors_text":"C. Ritter, G. J. Nilsen, I. da Silva, K. Tustain, L. Clark","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-10-03T10:56:25Z","title":"Nuclear and Magnetic Structures of the Frustrated Quantum Antiferromagnet Barlowite, Cu$_{4}$(OH)$_{6}$FBr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.01684","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":"sha256:3c3956b6a47a5846284ebebd6dcb2f4648014517984fe595fb4201801c9f8db3","target":"record","created_at":"2026-05-17T23:59:04Z","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":"1f2cf54ee3b2e7ac9b17e94420999ce1afdad585b6b6f5966b0de035f67e5cc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-10-03T10:56:25Z","title_canon_sha256":"56e5dcfc435dd2e6239a8ea8086c3793080106921f3a3a5b7caaefc46fc21a96"},"schema_version":"1.0","source":{"id":"1810.01684","kind":"arxiv","version":1}},"canonical_sha256":"6be04f362d1de4d91a710b98016be3e8d48117ecc91722f5da4ee9dad7c613f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6be04f362d1de4d91a710b98016be3e8d48117ecc91722f5da4ee9dad7c613f9","first_computed_at":"2026-05-17T23:59:04.803213Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:04.803213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CCIzBgeCW1iGWtB1JY7CHaFkTtCIPLV8fUsZHE+MAlMIfz6HFK3xMuHLp2Y8QT12G2d1tatUlp8Nt4CCZ7qHAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:04.803789Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.01684","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c3956b6a47a5846284ebebd6dcb2f4648014517984fe595fb4201801c9f8db3","sha256:d23870ef034efd8be491119d3f193dc5bececde7f4fa005715978c07ea907fc4"],"state_sha256":"6693485ae6469700e7b4c3c01c60d8a1f53d1eb0a861143547906ce0d24271fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mJ+aNwBomCGkFzD1SiNKepnxKClcDgZILEElLtA6RACb5fr0MDRXX59QcAx73Fpt7RJ/Zn1l1GpFtEZbb7/TDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T08:52:14.671730Z","bundle_sha256":"a0889a4d3f0d3d8c7ca7d16c7b037c0d03bb2cfab50da91051a99dcd6ea9c6bf"}}