{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:EKBLL5IK3ZRTD5UQ4RENJDC34M","short_pith_number":"pith:EKBLL5IK","schema_version":"1.0","canonical_sha256":"2282b5f50ade6331f690e448d48c5be336354c0595763d22ea2c2e86041146fd","source":{"kind":"arxiv","id":"2012.04787","version":1},"attestation_state":"computed","paper":{"title":"Superconductivity at 253 K in lanthanum-yttrium ternary hydrides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Alexander B. Vasiliev, Alexander G. Gavriliuk, Alexander G. Kvashnin, Andrey V. Sadakov, Anna G. Ivanova, Artem R. Oganov, Denis N. Karimov, Dmitrii V. Semenok, Igor S. Lyubutin, Ivan A. Troyan, Kirill S. Pervakov, Konstantin V. Glazyrin, Michael Hanfland, Nico Giordano, Oleg A. Sobolevskiy, Ryosuke Akashi, Vladimir M. Pudalov","submitted_at":"2020-12-08T23:13:03Z","abstract_excerpt":"Polyhydrides offer intriguing perspectives as high-temperature superconductors. Here we report the high-pressure synthesis of a series of lanthanum-yttrium ternary hydrides: cubic hexahydride $(La,Y)H_{6}$ with a critical temperature $T_{C}$ = 237 +/- 5 K and decahydrides $(La,Y)H_{10}$ with a maximum $T_{C}$ ~${253 K}$ and an extrapolated upper critical magnetic field $B_{C2(0)}$ up to ${135 T}$ at 183 GPa. This is one of the first examples of ternary high-$T_{C}$ superconducting hydrides. Our experiments show that a part of the atoms in the structures of recently discovered ${Im3m}$-$YH_{6}$"},"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":"2012.04787","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2020-12-08T23:13:03Z","cross_cats_sorted":[],"title_canon_sha256":"59ee4f05d86c4c72ac89c835ed5dea4134e80343af518595c8eb338e477ffe45","abstract_canon_sha256":"1a96291f0b66ae281a3b6c4723de19509a5203e3bf42a65629de28e58d130e81"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:36:47.323131Z","signature_b64":"FfYgAJ2gNZdFtBO6IvAIM1mV4T269S/ui2G6vXSScPRf1djVY1Sjefs2jQOooa9U1Kgf1TnBT+fadues9YwfDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2282b5f50ade6331f690e448d48c5be336354c0595763d22ea2c2e86041146fd","last_reissued_at":"2026-07-05T02:36:47.322610Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:36:47.322610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Superconductivity at 253 K in lanthanum-yttrium ternary hydrides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Alexander B. Vasiliev, Alexander G. Gavriliuk, Alexander G. Kvashnin, Andrey V. Sadakov, Anna G. Ivanova, Artem R. Oganov, Denis N. Karimov, Dmitrii V. Semenok, Igor S. Lyubutin, Ivan A. Troyan, Kirill S. Pervakov, Konstantin V. Glazyrin, Michael Hanfland, Nico Giordano, Oleg A. Sobolevskiy, Ryosuke Akashi, Vladimir M. Pudalov","submitted_at":"2020-12-08T23:13:03Z","abstract_excerpt":"Polyhydrides offer intriguing perspectives as high-temperature superconductors. Here we report the high-pressure synthesis of a series of lanthanum-yttrium ternary hydrides: cubic hexahydride $(La,Y)H_{6}$ with a critical temperature $T_{C}$ = 237 +/- 5 K and decahydrides $(La,Y)H_{10}$ with a maximum $T_{C}$ ~${253 K}$ and an extrapolated upper critical magnetic field $B_{C2(0)}$ up to ${135 T}$ at 183 GPa. This is one of the first examples of ternary high-$T_{C}$ superconducting hydrides. Our experiments show that a part of the atoms in the structures of recently discovered ${Im3m}$-$YH_{6}$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.04787","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/2012.04787/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":"2012.04787","created_at":"2026-07-05T02:36:47.322675+00:00"},{"alias_kind":"arxiv_version","alias_value":"2012.04787v1","created_at":"2026-07-05T02:36:47.322675+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.04787","created_at":"2026-07-05T02:36:47.322675+00:00"},{"alias_kind":"pith_short_12","alias_value":"EKBLL5IK3ZRT","created_at":"2026-07-05T02:36:47.322675+00:00"},{"alias_kind":"pith_short_16","alias_value":"EKBLL5IK3ZRTD5UQ","created_at":"2026-07-05T02:36:47.322675+00:00"},{"alias_kind":"pith_short_8","alias_value":"EKBLL5IK","created_at":"2026-07-05T02:36:47.322675+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/EKBLL5IK3ZRTD5UQ4RENJDC34M","json":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M.json","graph_json":"https://pith.science/api/pith-number/EKBLL5IK3ZRTD5UQ4RENJDC34M/graph.json","events_json":"https://pith.science/api/pith-number/EKBLL5IK3ZRTD5UQ4RENJDC34M/events.json","paper":"https://pith.science/paper/EKBLL5IK"},"agent_actions":{"view_html":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M","download_json":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M.json","view_paper":"https://pith.science/paper/EKBLL5IK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2012.04787&json=true","fetch_graph":"https://pith.science/api/pith-number/EKBLL5IK3ZRTD5UQ4RENJDC34M/graph.json","fetch_events":"https://pith.science/api/pith-number/EKBLL5IK3ZRTD5UQ4RENJDC34M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M/action/storage_attestation","attest_author":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M/action/author_attestation","sign_citation":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M/action/citation_signature","submit_replication":"https://pith.science/pith/EKBLL5IK3ZRTD5UQ4RENJDC34M/action/replication_record"}},"created_at":"2026-07-05T02:36:47.322675+00:00","updated_at":"2026-07-05T02:36:47.322675+00:00"}