{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CQPSHBZX6QH5CDT7BGJ5FSOMXO","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":"49ce85ce4e1d94b369459639e8c24a28947827b423896161feb0c9cfc0e157ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-11-27T13:30:02Z","title_canon_sha256":"924eb36c38e291dc33b27bd2032a16395c5e6efce25266f04e4c929de1dd6a0f"},"schema_version":"1.0","source":{"id":"1411.7590","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.7590","created_at":"2026-05-18T00:24:40Z"},{"alias_kind":"arxiv_version","alias_value":"1411.7590v1","created_at":"2026-05-18T00:24:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7590","created_at":"2026-05-18T00:24:40Z"},{"alias_kind":"pith_short_12","alias_value":"CQPSHBZX6QH5","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CQPSHBZX6QH5CDT7","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CQPSHBZX","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:b1b68dd51df029b9205aceaf8e9b163435a6769402608a7e8c3ce8d6973b5271","target":"graph","created_at":"2026-05-18T00:24:40Z","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":"We present a polarization-dependent infrared reflectivity study of the spin-ladder compound Sr$_{2.5}$Ca$_{11.5}$Cu$_{24}$O$_{41}$ under pressure. The optical response is strongly anisotropic, with the highest reflectivity along the ladders/chains (\\textbf{E}$\\|$c) revealing a metallic character. For the polarization direction perpendicular to the ladder plane, an insulating behavior is observed. With increasing pressure the optical conductivity for \\textbf{E}$\\|$c shows a strong increase, which is most pronounced below 2000~cm$^{-1}$. According to the spectral weight analysis of the \\textbf{E","authors_text":"A. Huber, C. A. Kuntscher, M. Huecker, S. Frank, U. Ammerahl","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-11-27T13:30:02Z","title":"Polarization-dependent infrared reflectivity study of Sr$_{2.5}$Ca$_{11.5}$Cu$_{24}$O$_{41}$ under pressure: Charge dynamics, charge distribution, and anisotropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7590","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:ed17d5dae270c30a458e120bd94b0e08813dcba8b549928d1df681c9f979c8f5","target":"record","created_at":"2026-05-18T00:24:40Z","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":"49ce85ce4e1d94b369459639e8c24a28947827b423896161feb0c9cfc0e157ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-11-27T13:30:02Z","title_canon_sha256":"924eb36c38e291dc33b27bd2032a16395c5e6efce25266f04e4c929de1dd6a0f"},"schema_version":"1.0","source":{"id":"1411.7590","kind":"arxiv","version":1}},"canonical_sha256":"141f238737f40fd10e7f0993d2c9ccbbb928c4f14e13049248d6be917859392d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"141f238737f40fd10e7f0993d2c9ccbbb928c4f14e13049248d6be917859392d","first_computed_at":"2026-05-18T00:24:40.160823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:40.160823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DDOxTV4iRWYjHUGhoETMYIqxxpFJRdbiLmhj9bzqZnDq78dxla8QFLXV8twwvCzkue+Csn8EvR5gOT8GzydLAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:40.161546Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.7590","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed17d5dae270c30a458e120bd94b0e08813dcba8b549928d1df681c9f979c8f5","sha256:b1b68dd51df029b9205aceaf8e9b163435a6769402608a7e8c3ce8d6973b5271"],"state_sha256":"69ebcbf6d48bff4841927f8ebe58c99f96e288eaa8e8dc12d6159121bb81ab5e"}