{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5NN4Z2QWVBQSZ44WBHKAE2QCT2","short_pith_number":"pith:5NN4Z2QW","canonical_record":{"source":{"id":"1602.08288","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-02-26T12:01:29Z","cross_cats_sorted":[],"title_canon_sha256":"fe2da9984e5c9b35789fbadb9534b7127b1e45609165333ba95358c43f578975","abstract_canon_sha256":"6a518d5316691cbb54f10cef4e512bb2b26339f6736437f5d3e0777e33986483"},"schema_version":"1.0"},"canonical_sha256":"eb5bccea16a8612cf39609d4026a029ea7f8d6bf76caa83a805b49c751286b13","source":{"kind":"arxiv","id":"1602.08288","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.08288","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"1602.08288v1","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.08288","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"5NN4Z2QWVBQS","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5NN4Z2QWVBQSZ44W","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5NN4Z2QW","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5NN4Z2QWVBQSZ44WBHKAE2QCT2","target":"record","payload":{"canonical_record":{"source":{"id":"1602.08288","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-02-26T12:01:29Z","cross_cats_sorted":[],"title_canon_sha256":"fe2da9984e5c9b35789fbadb9534b7127b1e45609165333ba95358c43f578975","abstract_canon_sha256":"6a518d5316691cbb54f10cef4e512bb2b26339f6736437f5d3e0777e33986483"},"schema_version":"1.0"},"canonical_sha256":"eb5bccea16a8612cf39609d4026a029ea7f8d6bf76caa83a805b49c751286b13","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:56.391597Z","signature_b64":"9u+O8LkB1qFA7T3j6Qa107/k4rOq3+3qaAGc1NdTGmhmoyjyyOeYKgfD/7PwGgE2TywEqwU6EwD+X7Ghz9bDAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb5bccea16a8612cf39609d4026a029ea7f8d6bf76caa83a805b49c751286b13","last_reissued_at":"2026-05-18T01:19:56.391205Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:56.391205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.08288","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":"2026-05-18T01:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hEFu5/8kVZDan2ERTDgSS5RtnzwKFKkATr2b6MqvLZpNziZ5BxsM/z0J2+9iG3M7K1Yvkik3isiYiouO7uooAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T04:25:03.945894Z"},"content_sha256":"50cb18cc46a52c7079a8a79f5911c7fbcc576a4f576c2f36ec3549045618f771","schema_version":"1.0","event_id":"sha256:50cb18cc46a52c7079a8a79f5911c7fbcc576a4f576c2f36ec3549045618f771"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5NN4Z2QWVBQSZ44WBHKAE2QCT2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pressure and magnetic field effects on a quasi-2D spin-1/2 Heisenberg antiferromagnet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. P. Landee, H.-R. Ott, J.Mesot, M. Pikulski, N. Barbero, T. Shiroka","submitted_at":"2016-02-26T12:01:29Z","abstract_excerpt":"Cu(pz)2(ClO4)2 (with pz denoting pyrazine, C4H4N2) is among the best realizations of a two-dimensional spin-1/2 square-lattice antiferromagnet. Below T_N = 4.21 K, its weak interlayer couplings induce a 3D magnetic order, strongly influenced by external magnetic fields and/or hydrostatic pressure. Previous work, focusing on the [H, T] phase diagram, identified a spin-flop transition, resulting in a field-tunable bicritical point. However, the influence of external pressure has not been investigated yet. Here we explore the extended [p, H, T] phase diagram of Cu(pz)2(ClO4)2 under pressures up t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.08288","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":"2026-05-18T01:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5LqPAZji0aMPkGJmGtkuLwF8NF2fLVvhh9JEwN6izBFuTh9faqfBH1bIibAvDx8BD/7Pudx47ZNUEC5WgfhFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T04:25:03.946234Z"},"content_sha256":"f5e23b465d4ff8f11e702e96ca16dc75f54b48c0c142928081ad85ad191042a4","schema_version":"1.0","event_id":"sha256:f5e23b465d4ff8f11e702e96ca16dc75f54b48c0c142928081ad85ad191042a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/bundle.json","state_url":"https://pith.science/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/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":"2026-07-04T04:25:03Z","links":{"resolver":"https://pith.science/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2","bundle":"https://pith.science/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/bundle.json","state":"https://pith.science/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5NN4Z2QWVBQSZ44WBHKAE2QCT2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5NN4Z2QWVBQSZ44WBHKAE2QCT2","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":"6a518d5316691cbb54f10cef4e512bb2b26339f6736437f5d3e0777e33986483","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-02-26T12:01:29Z","title_canon_sha256":"fe2da9984e5c9b35789fbadb9534b7127b1e45609165333ba95358c43f578975"},"schema_version":"1.0","source":{"id":"1602.08288","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.08288","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"1602.08288v1","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.08288","created_at":"2026-05-18T01:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"5NN4Z2QWVBQS","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5NN4Z2QWVBQSZ44W","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5NN4Z2QW","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:f5e23b465d4ff8f11e702e96ca16dc75f54b48c0c142928081ad85ad191042a4","target":"graph","created_at":"2026-05-18T01:19:56Z","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":"Cu(pz)2(ClO4)2 (with pz denoting pyrazine, C4H4N2) is among the best realizations of a two-dimensional spin-1/2 square-lattice antiferromagnet. Below T_N = 4.21 K, its weak interlayer couplings induce a 3D magnetic order, strongly influenced by external magnetic fields and/or hydrostatic pressure. Previous work, focusing on the [H, T] phase diagram, identified a spin-flop transition, resulting in a field-tunable bicritical point. However, the influence of external pressure has not been investigated yet. Here we explore the extended [p, H, T] phase diagram of Cu(pz)2(ClO4)2 under pressures up t","authors_text":"C. P. Landee, H.-R. Ott, J.Mesot, M. Pikulski, N. Barbero, T. Shiroka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-02-26T12:01:29Z","title":"Pressure and magnetic field effects on a quasi-2D spin-1/2 Heisenberg antiferromagnet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.08288","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":"sha256:50cb18cc46a52c7079a8a79f5911c7fbcc576a4f576c2f36ec3549045618f771","target":"record","created_at":"2026-05-18T01:19:56Z","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":"6a518d5316691cbb54f10cef4e512bb2b26339f6736437f5d3e0777e33986483","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-02-26T12:01:29Z","title_canon_sha256":"fe2da9984e5c9b35789fbadb9534b7127b1e45609165333ba95358c43f578975"},"schema_version":"1.0","source":{"id":"1602.08288","kind":"arxiv","version":1}},"canonical_sha256":"eb5bccea16a8612cf39609d4026a029ea7f8d6bf76caa83a805b49c751286b13","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb5bccea16a8612cf39609d4026a029ea7f8d6bf76caa83a805b49c751286b13","first_computed_at":"2026-05-18T01:19:56.391205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:56.391205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9u+O8LkB1qFA7T3j6Qa107/k4rOq3+3qaAGc1NdTGmhmoyjyyOeYKgfD/7PwGgE2TywEqwU6EwD+X7Ghz9bDAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:56.391597Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.08288","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50cb18cc46a52c7079a8a79f5911c7fbcc576a4f576c2f36ec3549045618f771","sha256:f5e23b465d4ff8f11e702e96ca16dc75f54b48c0c142928081ad85ad191042a4"],"state_sha256":"ae354f624b7c044cbc33178e0f1da69b4c398269f2f4924c31013c6ad73bba77"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oe5d8Asyf1a26vVfZcajTH70JD956N+CYcPDr1chr1yoSVY6FXIdI4Q9F1Ws1WArrYTWdqB1uCxyTQFM2cR9DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T04:25:03.948261Z","bundle_sha256":"3342c0097b6bf140d990bb594afaa88597c47a23c9890b8ceb5f5948233bd6e6"}}