{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PILWHUYNSIFWGCPG46MDB73OMP","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":"3596ac21fa2bc4e878d8ec8782abddc7f688886948ec2ca92a9f0ccdbc4440fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-07T12:47:09Z","title_canon_sha256":"4458d7bb51ad0f849ca2f33ce92ff14378c4786cb1d9a0d44a4196b464e305fc"},"schema_version":"1.0","source":{"id":"1504.01585","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01585","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01585v2","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01585","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"pith_short_12","alias_value":"PILWHUYNSIFW","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PILWHUYNSIFWGCPG","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PILWHUYN","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:d57d58102c689ef00be0a4fc1ae1ffa90af2c141651775e009c9d12f4cbaa635","target":"graph","created_at":"2026-05-18T01:32:00Z","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":"All underdoped high-temperature cuprate superconductors appear to exhibit charge density wave (CDW) order, but both the underlying symmetry breaking and the origin of the CDW remain unclear. We use X-ray diffraction to determine the microscopic structure of the CDW in an archetypical cuprate YBa$_2$Cu$_3$O$_{6.54}$ at its superconducting transition temperature Tc ~ 60 K. We find that the CDWs present in this material break the mirror symmetry of the CuO2 bilayers. The ionic displacements in a CDW have two components: one perpendicular to the CuO$_2$ planes, and another parallel to these planes","authors_text":"A. Briffa, A.T. Holmes, D. Bonn, E. Blackburn, E. M. Forgan, J. Chang, L. Bouchenoire, M. Huecker, M. v. Zimmermann, N. B. Christensen, Ruixing Liang, S.D. Brown, S.M. Hayden, W. N. Hardy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-07T12:47:09Z","title":"The nature of the charge density waves in under-doped YBa$_2$Cu$_3$O$_{6.54}$ revealed by X-ray measurements of the ionic displacements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01585","kind":"arxiv","version":2},"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":"sha256:29c124761301a96abc314821babca99ea97d6a9c822ced95bf889ab053ef6f73","target":"record","created_at":"2026-05-18T01:32:00Z","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":"3596ac21fa2bc4e878d8ec8782abddc7f688886948ec2ca92a9f0ccdbc4440fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-07T12:47:09Z","title_canon_sha256":"4458d7bb51ad0f849ca2f33ce92ff14378c4786cb1d9a0d44a4196b464e305fc"},"schema_version":"1.0","source":{"id":"1504.01585","kind":"arxiv","version":2}},"canonical_sha256":"7a1763d30d920b6309e6e79830ff6e63cfff05b668df213fda46bc2fd7254931","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a1763d30d920b6309e6e79830ff6e63cfff05b668df213fda46bc2fd7254931","first_computed_at":"2026-05-18T01:32:00.667380Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:00.667380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zWimNQi04Bip5Z95aC8mkarSh16kEwD8R2QpxTfh8A+2pw7nm7yatmqm8Jox0d6x9oZtgsuO05ZTIRa7prHFAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:00.668080Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01585","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29c124761301a96abc314821babca99ea97d6a9c822ced95bf889ab053ef6f73","sha256:d57d58102c689ef00be0a4fc1ae1ffa90af2c141651775e009c9d12f4cbaa635"],"state_sha256":"207a16b25db1e35b8700227320a5b8016c96f95b56f02295484e03eb016b598a"}