{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:LJAEXMFFMGAKSSLNH6ZBXDR4AT","short_pith_number":"pith:LJAEXMFF","canonical_record":{"source":{"id":"1005.1474","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-05-10T09:03:16Z","cross_cats_sorted":[],"title_canon_sha256":"b736426acdb7f26dfdf93373012218f3547ee0533d724fbcf6f009021cd76ccf","abstract_canon_sha256":"8437d1a4ff83330c3d77f89cafa264f4e1478f8cb893514f25ea756b1c908fd4"},"schema_version":"1.0"},"canonical_sha256":"5a404bb0a56180a9496d3fb21b8e3c04cf9e4cc6c066558c155cbfc900b74e7c","source":{"kind":"arxiv","id":"1005.1474","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.1474","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"arxiv_version","alias_value":"1005.1474v1","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.1474","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"pith_short_12","alias_value":"LJAEXMFFMGAK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LJAEXMFFMGAKSSLN","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LJAEXMFF","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:LJAEXMFFMGAKSSLNH6ZBXDR4AT","target":"record","payload":{"canonical_record":{"source":{"id":"1005.1474","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-05-10T09:03:16Z","cross_cats_sorted":[],"title_canon_sha256":"b736426acdb7f26dfdf93373012218f3547ee0533d724fbcf6f009021cd76ccf","abstract_canon_sha256":"8437d1a4ff83330c3d77f89cafa264f4e1478f8cb893514f25ea756b1c908fd4"},"schema_version":"1.0"},"canonical_sha256":"5a404bb0a56180a9496d3fb21b8e3c04cf9e4cc6c066558c155cbfc900b74e7c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:15.007251Z","signature_b64":"+2GbniTnZWO0xxSy9KDd6MA/apoQVY9QijTm6BeFSJrT4a6b4AV0Xx4yfuep4RfgeLfLPoiZ3epUPewVuRJHBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a404bb0a56180a9496d3fb21b8e3c04cf9e4cc6c066558c155cbfc900b74e7c","last_reissued_at":"2026-05-18T04:27:15.006613Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:15.006613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.1474","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":"2026-05-18T04:27:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f+TT2DgQQk+4kV95RY8UQVJMjuVavYY3W2K0Q59tmmJNZH4U41Ui5BTQ9PeTZY0IWeLU4stUlD2hu09d0sNNBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:36:59.080168Z"},"content_sha256":"ba93f5cdc4e28a465cbd903fb16f6fef289917587be2079062fd3bdde8eb3411","schema_version":"1.0","event_id":"sha256:ba93f5cdc4e28a465cbd903fb16f6fef289917587be2079062fd3bdde8eb3411"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:LJAEXMFFMGAKSSLNH6ZBXDR4AT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropy of Magnetic Interactions in the Spin-Ladder Compound (C$_5$H$_{12}$N)$_2$CuBr$_4$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"B. Thielemann, C. Berthier, Ch. R\\\"uegg, E. \\v{C}i\\v{z}m\\'ar, J. Wosnitza, K. W. Kr\\\"amer, M. Horvati\\'c, M. Klanj\\v{s}ek, M. Ozerov, O. Piovesana, S. A. Zvyagin","submitted_at":"2010-05-10T09:03:16Z","abstract_excerpt":"Magnetic excitations  in the  spin-ladder material (C$_5$H$_{12}$N)$_2$CuBr$_4$ [BPCB] are probed by high-resolution multi-frequency  electron spin resonance (ESR) spectroscopy. Our experiments provide a direct evidence for a biaxial anisotropy ($\\sim 5\\%$ of the dominant exchange interaction), that is in contrast to a fully isotropic spin-ladder model employed for this system previously. It is argued that this anisotropy in BPCB is caused by spin-orbit coupling, which appears to  be important for describing  magnetic properties of this compound. The zero-field zone-center gap in the excitatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.1474","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":"2026-05-18T04:27:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"29f4wIkbrLZP0tL7G4fHLX2vR8/LSBS3Lcb5hW0a1rOQVRq64pEjETUXkNofIOOgRmaxx93ZSR687UAjAL+SDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:36:59.080873Z"},"content_sha256":"b08e77baf3d837be06864eccfe3c1f9d61b5cb83203d5f2ff65c66ea6111a6bd","schema_version":"1.0","event_id":"sha256:b08e77baf3d837be06864eccfe3c1f9d61b5cb83203d5f2ff65c66ea6111a6bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/bundle.json","state_url":"https://pith.science/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/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":"2026-05-25T11:36:59Z","links":{"resolver":"https://pith.science/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT","bundle":"https://pith.science/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/bundle.json","state":"https://pith.science/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LJAEXMFFMGAKSSLNH6ZBXDR4AT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:LJAEXMFFMGAKSSLNH6ZBXDR4AT","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":"8437d1a4ff83330c3d77f89cafa264f4e1478f8cb893514f25ea756b1c908fd4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-05-10T09:03:16Z","title_canon_sha256":"b736426acdb7f26dfdf93373012218f3547ee0533d724fbcf6f009021cd76ccf"},"schema_version":"1.0","source":{"id":"1005.1474","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.1474","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"arxiv_version","alias_value":"1005.1474v1","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.1474","created_at":"2026-05-18T04:27:15Z"},{"alias_kind":"pith_short_12","alias_value":"LJAEXMFFMGAK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LJAEXMFFMGAKSSLN","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LJAEXMFF","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:b08e77baf3d837be06864eccfe3c1f9d61b5cb83203d5f2ff65c66ea6111a6bd","target":"graph","created_at":"2026-05-18T04:27:15Z","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":"Magnetic excitations  in the  spin-ladder material (C$_5$H$_{12}$N)$_2$CuBr$_4$ [BPCB] are probed by high-resolution multi-frequency  electron spin resonance (ESR) spectroscopy. Our experiments provide a direct evidence for a biaxial anisotropy ($\\sim 5\\%$ of the dominant exchange interaction), that is in contrast to a fully isotropic spin-ladder model employed for this system previously. It is argued that this anisotropy in BPCB is caused by spin-orbit coupling, which appears to  be important for describing  magnetic properties of this compound. The zero-field zone-center gap in the excitatio","authors_text":"B. Thielemann, C. Berthier, Ch. R\\\"uegg, E. \\v{C}i\\v{z}m\\'ar, J. Wosnitza, K. W. Kr\\\"amer, M. Horvati\\'c, M. Klanj\\v{s}ek, M. Ozerov, O. Piovesana, S. A. Zvyagin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-05-10T09:03:16Z","title":"Anisotropy of Magnetic Interactions in the Spin-Ladder Compound (C$_5$H$_{12}$N)$_2$CuBr$_4$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.1474","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:ba93f5cdc4e28a465cbd903fb16f6fef289917587be2079062fd3bdde8eb3411","target":"record","created_at":"2026-05-18T04:27:15Z","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":"8437d1a4ff83330c3d77f89cafa264f4e1478f8cb893514f25ea756b1c908fd4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-05-10T09:03:16Z","title_canon_sha256":"b736426acdb7f26dfdf93373012218f3547ee0533d724fbcf6f009021cd76ccf"},"schema_version":"1.0","source":{"id":"1005.1474","kind":"arxiv","version":1}},"canonical_sha256":"5a404bb0a56180a9496d3fb21b8e3c04cf9e4cc6c066558c155cbfc900b74e7c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a404bb0a56180a9496d3fb21b8e3c04cf9e4cc6c066558c155cbfc900b74e7c","first_computed_at":"2026-05-18T04:27:15.006613Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:27:15.006613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+2GbniTnZWO0xxSy9KDd6MA/apoQVY9QijTm6BeFSJrT4a6b4AV0Xx4yfuep4RfgeLfLPoiZ3epUPewVuRJHBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:27:15.007251Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.1474","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba93f5cdc4e28a465cbd903fb16f6fef289917587be2079062fd3bdde8eb3411","sha256:b08e77baf3d837be06864eccfe3c1f9d61b5cb83203d5f2ff65c66ea6111a6bd"],"state_sha256":"47b4829294c95e47573580c841f949a90a453b0659f7f1ac1aadba64b18d47bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uQke/l8v2rk5WRgBAM35mpAEcuqH/1Cpt0KI8CC5ZdhNBcCtSoV4sQsymzSjCBtS/jqdBRgBtzwgq6Lm//JmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:36:59.084197Z","bundle_sha256":"56f1f0472f3db8cd5349029149fc66619fc4e83cbd2e02417da4f1b6eb65a988"}}