{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:GPLJXGTHDASKVWLZMWMUAH6NJN","short_pith_number":"pith:GPLJXGTH","canonical_record":{"source":{"id":"cond-mat/9707166","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1997-07-16T16:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"b8caea5c72a985c51dae3ad592c392996dc7c24d7b921e741ba56200d6efc7b8","abstract_canon_sha256":"aa4567efd06c135f897fb1bec40f6ce3e3c0a79b50d638d5c819fcc466475a6e"},"schema_version":"1.0"},"canonical_sha256":"33d69b9a671824aad9796599401fcd4b40d6a83898887295f2f36af8cfc155fa","source":{"kind":"arxiv","id":"cond-mat/9707166","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9707166","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9707166v1","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9707166","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_12","alias_value":"GPLJXGTHDASK","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_16","alias_value":"GPLJXGTHDASKVWLZ","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_8","alias_value":"GPLJXGTH","created_at":"2026-07-04T16:04:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:GPLJXGTHDASKVWLZMWMUAH6NJN","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9707166","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1997-07-16T16:35:52Z","cross_cats_sorted":[],"title_canon_sha256":"b8caea5c72a985c51dae3ad592c392996dc7c24d7b921e741ba56200d6efc7b8","abstract_canon_sha256":"aa4567efd06c135f897fb1bec40f6ce3e3c0a79b50d638d5c819fcc466475a6e"},"schema_version":"1.0"},"canonical_sha256":"33d69b9a671824aad9796599401fcd4b40d6a83898887295f2f36af8cfc155fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:04:05.967368Z","signature_b64":"+tXuxKnBKShg3dfk6946FzzH3KhXWR9Fh2PQ8/qMllaI6fL8P+IL3p+2vJfPlKLo186Fcc1sbmSWc57j0ui+Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33d69b9a671824aad9796599401fcd4b40d6a83898887295f2f36af8cfc155fa","last_reissued_at":"2026-07-04T16:04:05.966945Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:04:05.966945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9707166","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":"2026-07-04T16:04:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9eOTKYUL2ZohokE4OLt0pi7KtUQAX9RuD9Io8J8fmgD7BWeCf9oSq5apo2AUYG4IphvO7+9R8TSIgul07a+dBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T01:22:31.826504Z"},"content_sha256":"27f167d81acfbd2d71db43edbab92373a8b61e35cd9ea44b4da244b6d612b2ca","schema_version":"1.0","event_id":"sha256:27f167d81acfbd2d71db43edbab92373a8b61e35cd9ea44b4da244b6d612b2ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:GPLJXGTHDASKVWLZMWMUAH6NJN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The square-lattice spiral magnet Ba_2CuGe_2O_7 in an in-plane magnetic field","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"A. Zheludev, D. A. Tennant, G. Shirane, K. Uchinokura, N. Koide, S. E. Nagler, S. Maslov, Y. Sasago","submitted_at":"1997-07-16T16:35:52Z","abstract_excerpt":"The magnetic structure of Ba_2CuGe_2O_7 is investigated by neutron diffraction in magnetic fields applied along several directions in the $(a,b)$ plane of the crystal. In relatively weak fields, $H\\lesssim 0.5$~T, the propagation vector of the spin-spiral rotates to form a finite angle with the field direction. This angle depends on the orientation of $H$ itself. The rotation of the propagation vector is accompanied by a re-orientation of the plane of spin rotation in the spiral. The observed behaviour is well described by a continuous-limit form of a free energy functional that includes excha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9707166","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/cond-mat/9707166/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":"2026-07-04T16:04:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GgxPkkhZSGSIcgX7n4EMpHYgfOxaG6dylTv4P8j1GqVc6iWX2iGMbp/N03fJoY5ELbd0y3svAMsV5jt/5iUIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T01:22:31.826872Z"},"content_sha256":"c5da00ac45266e29ad1e4f4ca5225242ccc29e4c06fd4c8dca9d13d94aed6d8f","schema_version":"1.0","event_id":"sha256:c5da00ac45266e29ad1e4f4ca5225242ccc29e4c06fd4c8dca9d13d94aed6d8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/bundle.json","state_url":"https://pith.science/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/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":"2026-07-05T01:22:31Z","links":{"resolver":"https://pith.science/pith/GPLJXGTHDASKVWLZMWMUAH6NJN","bundle":"https://pith.science/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/bundle.json","state":"https://pith.science/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GPLJXGTHDASKVWLZMWMUAH6NJN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:GPLJXGTHDASKVWLZMWMUAH6NJN","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":"aa4567efd06c135f897fb1bec40f6ce3e3c0a79b50d638d5c819fcc466475a6e","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"1997-07-16T16:35:52Z","title_canon_sha256":"b8caea5c72a985c51dae3ad592c392996dc7c24d7b921e741ba56200d6efc7b8"},"schema_version":"1.0","source":{"id":"cond-mat/9707166","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9707166","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9707166v1","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9707166","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_12","alias_value":"GPLJXGTHDASK","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_16","alias_value":"GPLJXGTHDASKVWLZ","created_at":"2026-07-04T16:04:05Z"},{"alias_kind":"pith_short_8","alias_value":"GPLJXGTH","created_at":"2026-07-04T16:04:05Z"}],"graph_snapshots":[{"event_id":"sha256:c5da00ac45266e29ad1e4f4ca5225242ccc29e4c06fd4c8dca9d13d94aed6d8f","target":"graph","created_at":"2026-07-04T16:04:05Z","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/cond-mat/9707166/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The magnetic structure of Ba_2CuGe_2O_7 is investigated by neutron diffraction in magnetic fields applied along several directions in the $(a,b)$ plane of the crystal. In relatively weak fields, $H\\lesssim 0.5$~T, the propagation vector of the spin-spiral rotates to form a finite angle with the field direction. This angle depends on the orientation of $H$ itself. The rotation of the propagation vector is accompanied by a re-orientation of the plane of spin rotation in the spiral. The observed behaviour is well described by a continuous-limit form of a free energy functional that includes excha","authors_text":"A. Zheludev, D. A. Tennant, G. Shirane, K. Uchinokura, N. Koide, S. E. Nagler, S. Maslov, Y. Sasago","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat","submitted_at":"1997-07-16T16:35:52Z","title":"The square-lattice spiral magnet Ba_2CuGe_2O_7 in an in-plane magnetic field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9707166","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":"sha256:27f167d81acfbd2d71db43edbab92373a8b61e35cd9ea44b4da244b6d612b2ca","target":"record","created_at":"2026-07-04T16:04:05Z","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":"aa4567efd06c135f897fb1bec40f6ce3e3c0a79b50d638d5c819fcc466475a6e","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"1997-07-16T16:35:52Z","title_canon_sha256":"b8caea5c72a985c51dae3ad592c392996dc7c24d7b921e741ba56200d6efc7b8"},"schema_version":"1.0","source":{"id":"cond-mat/9707166","kind":"arxiv","version":1}},"canonical_sha256":"33d69b9a671824aad9796599401fcd4b40d6a83898887295f2f36af8cfc155fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33d69b9a671824aad9796599401fcd4b40d6a83898887295f2f36af8cfc155fa","first_computed_at":"2026-07-04T16:04:05.966945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:04:05.966945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+tXuxKnBKShg3dfk6946FzzH3KhXWR9Fh2PQ8/qMllaI6fL8P+IL3p+2vJfPlKLo186Fcc1sbmSWc57j0ui+Bw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:04:05.967368Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9707166","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27f167d81acfbd2d71db43edbab92373a8b61e35cd9ea44b4da244b6d612b2ca","sha256:c5da00ac45266e29ad1e4f4ca5225242ccc29e4c06fd4c8dca9d13d94aed6d8f"],"state_sha256":"e7aad19975d46e96f38fb141e323fb3983633a520f431106d4ee27b46e4f806f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sRCQA3TStJXY54Vb825K5TUSzAxNNHf41l+V8Bqi2NaOh0BiaMy7Y/S2IvkX2KitYDhr3kGZic7fVR0TPlwUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T01:22:31.828778Z","bundle_sha256":"59ed2663d30497ab6e23c858692d068b182848c1b58d26cf2979734f785a7b77"}}