{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:DHOXLZDFHRCGKH6CIGV7JX7TYA","short_pith_number":"pith:DHOXLZDF","schema_version":"1.0","canonical_sha256":"19dd75e4653c44651fc241abf4dff3c012a9806896dc4bf13c651f25594cc9ff","source":{"kind":"arxiv","id":"2309.08959","version":3},"attestation_state":"computed","paper":{"title":"Non-centrosymmetric, transverse structural modulation in SrAl4, and elucidation of its origin in the BaAl4 family of compounds","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Arumugam Thamizhavel, Bishal Baran Maity, Claudio Eisele, Hanqi Pi, Harshit Agarwal, Hongming Weng, Jia Chen, Jin-Ke Bao, Leila Noohinejad, Masaki Kado, Minoru Nohara, Sander van Smaalen, Sitaram Ramakrishnan, Srinivasan Ramakrishnan, Surya Rohith Kotla, Zhaopeng Guo","submitted_at":"2023-09-16T11:27:02Z","abstract_excerpt":"At ambient conditions SrAl4 adopts the BaAl4 structure type with space group I4/mmm. It undergoes a charge-density-wave (CDW) transition at TCDW = 243 K, followed by a structural transition at TS = 87 K. Temperature-dependent single-crystal X-ray diffraction (SXRD) leads to the observation of incommensurate superlattice reflections at q = \\sigma c* with \\sigma = 0.1116 at 200 K. The CDW has orthorhombic symmetry with the acentric superspace group F222(00sigma)00s, where F222 is a subgroup of Fmmm as well as of I4/mmm. Atomic displacements mainly represent a transverse wave, with displacements "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2309.08959","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-09-16T11:27:02Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1a35d3cf065398a6ee211fc75f03410ca4e7aa807a93deea10628a8c1cfe4628","abstract_canon_sha256":"becd5cc4db3276f7a2cd6e80b24282c88d7d673135fb31dac9f4b32e97e52f53"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:32:09.180517Z","signature_b64":"FHFFszedwOiN4QLD2GAX5A2bkwX7JVKr9lJQGQsdzTOTsNfna8gqLqd0mdu74oDo1vv+4neu0Nj2DeqD3D7QBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19dd75e4653c44651fc241abf4dff3c012a9806896dc4bf13c651f25594cc9ff","last_reissued_at":"2026-07-05T08:32:09.180052Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:32:09.180052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-centrosymmetric, transverse structural modulation in SrAl4, and elucidation of its origin in the BaAl4 family of compounds","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Arumugam Thamizhavel, Bishal Baran Maity, Claudio Eisele, Hanqi Pi, Harshit Agarwal, Hongming Weng, Jia Chen, Jin-Ke Bao, Leila Noohinejad, Masaki Kado, Minoru Nohara, Sander van Smaalen, Sitaram Ramakrishnan, Srinivasan Ramakrishnan, Surya Rohith Kotla, Zhaopeng Guo","submitted_at":"2023-09-16T11:27:02Z","abstract_excerpt":"At ambient conditions SrAl4 adopts the BaAl4 structure type with space group I4/mmm. It undergoes a charge-density-wave (CDW) transition at TCDW = 243 K, followed by a structural transition at TS = 87 K. Temperature-dependent single-crystal X-ray diffraction (SXRD) leads to the observation of incommensurate superlattice reflections at q = \\sigma c* with \\sigma = 0.1116 at 200 K. The CDW has orthorhombic symmetry with the acentric superspace group F222(00sigma)00s, where F222 is a subgroup of Fmmm as well as of I4/mmm. Atomic displacements mainly represent a transverse wave, with displacements "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.08959","kind":"arxiv","version":3},"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/2309.08959/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2309.08959","created_at":"2026-07-05T08:32:09.180111+00:00"},{"alias_kind":"arxiv_version","alias_value":"2309.08959v3","created_at":"2026-07-05T08:32:09.180111+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.08959","created_at":"2026-07-05T08:32:09.180111+00:00"},{"alias_kind":"pith_short_12","alias_value":"DHOXLZDFHRCG","created_at":"2026-07-05T08:32:09.180111+00:00"},{"alias_kind":"pith_short_16","alias_value":"DHOXLZDFHRCGKH6C","created_at":"2026-07-05T08:32:09.180111+00:00"},{"alias_kind":"pith_short_8","alias_value":"DHOXLZDF","created_at":"2026-07-05T08:32:09.180111+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA","json":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA.json","graph_json":"https://pith.science/api/pith-number/DHOXLZDFHRCGKH6CIGV7JX7TYA/graph.json","events_json":"https://pith.science/api/pith-number/DHOXLZDFHRCGKH6CIGV7JX7TYA/events.json","paper":"https://pith.science/paper/DHOXLZDF"},"agent_actions":{"view_html":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA","download_json":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA.json","view_paper":"https://pith.science/paper/DHOXLZDF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2309.08959&json=true","fetch_graph":"https://pith.science/api/pith-number/DHOXLZDFHRCGKH6CIGV7JX7TYA/graph.json","fetch_events":"https://pith.science/api/pith-number/DHOXLZDFHRCGKH6CIGV7JX7TYA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA/action/storage_attestation","attest_author":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA/action/author_attestation","sign_citation":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA/action/citation_signature","submit_replication":"https://pith.science/pith/DHOXLZDFHRCGKH6CIGV7JX7TYA/action/replication_record"}},"created_at":"2026-07-05T08:32:09.180111+00:00","updated_at":"2026-07-05T08:32:09.180111+00:00"}