{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:OF2KO6Q5EWWZE2UP6AOI4PVI3T","short_pith_number":"pith:OF2KO6Q5","schema_version":"1.0","canonical_sha256":"7174a77a1d25ad926a8ff01c8e3ea8dcf5a367ba43ba705fec8984d6da2f73c2","source":{"kind":"arxiv","id":"2503.23874","version":1},"attestation_state":"computed","paper":{"title":"He-Mg compounds and helium-driven nonmetal transition in metallic magnesium","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.other","physics.chem-ph","physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Wang, Hua Y. Geng, H. Wang, H. X. Song, Q. D. Hao, X. L. Pan, Y. F. Wang, Y. S. Huang, Y. Sun","submitted_at":"2025-03-31T09:25:09Z","abstract_excerpt":"The polymorphism and mechanism of helium compounds is crucial for understanding the physical and chemical nature of He-bearing materials under pressures. Here, we predict two new types of He-bearing compounds, MgHe and MgnHe (n = 6, 8, 10, 15, 18), being formed above 750 GPa by unbiased ab initio structure search. An unexpected bandgap is opened up in MgHe at as low as around 200 GPa. This is the first case of noble gas driven metal-nonmetal transition in all elements. The same mechanism is demonstrated also being applicable to other metallic elements, and making beryllium transform into a non"},"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":"2503.23874","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-31T09:25:09Z","cross_cats_sorted":["cond-mat.other","physics.chem-ph","physics.comp-ph"],"title_canon_sha256":"830ad28f5beebe01e3d01d3de5138b9a21d7b97805df09a9d3d09e4d3afed05a","abstract_canon_sha256":"381a991be0f059564f07adbe1fdfb8b6304c87808221f728e2bba08b3d5421a5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:42:01.127434Z","signature_b64":"UyHuDK3xb8uEWE0hObA8TxZ9mP0gHeUo7lnkyJuTgNMXMoXQxnYZ+yf7YQ3cmfxUPV9zSaFMGt0DTE9WIW6VAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7174a77a1d25ad926a8ff01c8e3ea8dcf5a367ba43ba705fec8984d6da2f73c2","last_reissued_at":"2026-07-05T10:42:01.126917Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:42:01.126917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"He-Mg compounds and helium-driven nonmetal transition in metallic magnesium","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.other","physics.chem-ph","physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Wang, Hua Y. Geng, H. Wang, H. X. Song, Q. D. Hao, X. L. Pan, Y. F. Wang, Y. S. Huang, Y. Sun","submitted_at":"2025-03-31T09:25:09Z","abstract_excerpt":"The polymorphism and mechanism of helium compounds is crucial for understanding the physical and chemical nature of He-bearing materials under pressures. Here, we predict two new types of He-bearing compounds, MgHe and MgnHe (n = 6, 8, 10, 15, 18), being formed above 750 GPa by unbiased ab initio structure search. An unexpected bandgap is opened up in MgHe at as low as around 200 GPa. This is the first case of noble gas driven metal-nonmetal transition in all elements. The same mechanism is demonstrated also being applicable to other metallic elements, and making beryllium transform into a non"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.23874","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/2503.23874/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":"2503.23874","created_at":"2026-07-05T10:42:01.126977+00:00"},{"alias_kind":"arxiv_version","alias_value":"2503.23874v1","created_at":"2026-07-05T10:42:01.126977+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.23874","created_at":"2026-07-05T10:42:01.126977+00:00"},{"alias_kind":"pith_short_12","alias_value":"OF2KO6Q5EWWZ","created_at":"2026-07-05T10:42:01.126977+00:00"},{"alias_kind":"pith_short_16","alias_value":"OF2KO6Q5EWWZE2UP","created_at":"2026-07-05T10:42:01.126977+00:00"},{"alias_kind":"pith_short_8","alias_value":"OF2KO6Q5","created_at":"2026-07-05T10:42:01.126977+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/OF2KO6Q5EWWZE2UP6AOI4PVI3T","json":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T.json","graph_json":"https://pith.science/api/pith-number/OF2KO6Q5EWWZE2UP6AOI4PVI3T/graph.json","events_json":"https://pith.science/api/pith-number/OF2KO6Q5EWWZE2UP6AOI4PVI3T/events.json","paper":"https://pith.science/paper/OF2KO6Q5"},"agent_actions":{"view_html":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T","download_json":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T.json","view_paper":"https://pith.science/paper/OF2KO6Q5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2503.23874&json=true","fetch_graph":"https://pith.science/api/pith-number/OF2KO6Q5EWWZE2UP6AOI4PVI3T/graph.json","fetch_events":"https://pith.science/api/pith-number/OF2KO6Q5EWWZE2UP6AOI4PVI3T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T/action/storage_attestation","attest_author":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T/action/author_attestation","sign_citation":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T/action/citation_signature","submit_replication":"https://pith.science/pith/OF2KO6Q5EWWZE2UP6AOI4PVI3T/action/replication_record"}},"created_at":"2026-07-05T10:42:01.126977+00:00","updated_at":"2026-07-05T10:42:01.126977+00:00"}