{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:RN2HDEAVJ6H2ETY6ZRVEFIXLWT","short_pith_number":"pith:RN2HDEAV","schema_version":"1.0","canonical_sha256":"8b747190154f8fa24f1ecc6a42a2ebb4e766795979ffdfac4cf8e3636eba2fe1","source":{"kind":"arxiv","id":"1810.08766","version":1},"attestation_state":"computed","paper":{"title":"Superionic hydrogen in Earth's deep interior","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chris J. Pickard, Duck Young Kim, Ho-kwang Mao, Qingyang Hu, Richard J. Needs, Yu He","submitted_at":"2018-10-20T07:34:30Z","abstract_excerpt":"Superionic hydrogen was previously thought to be an exotic state predicted and confirmed only in pure H2O ice. In Earth's deep interior, H2O exists in the form of O-H groups in ultra-dense hydrous minerals, which have been proved to be stable even at the conditions of the core-mantle boundary (CMB). However, the superionic states of these hydrous minerals at high P-T have not been investigated. Using first-principles calculations, we found that pyrite structured FeO2Hx (0 <= x <= 1) and d-AlOOH, which have been proposed to be major hydrogen-bearing phases in the deep lower mantle (DLM), contai"},"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":"1810.08766","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-20T07:34:30Z","cross_cats_sorted":[],"title_canon_sha256":"5f875ce61ee54b94d322617b5be2d9d7ae064a64fa53c45e90b7981cc4686712","abstract_canon_sha256":"25be52313a7da39a3879e08365994ee860de6fce13b533096a1dd88ab7004e0a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:41.959007Z","signature_b64":"g9rOSBMlAzbwdrzj3IGupYu4QnK+6F5v8Kec/UzvPf6TPD/wHi6fIxgaFmNJPHCjKM7QGd2V+iPwPdQufGpsBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b747190154f8fa24f1ecc6a42a2ebb4e766795979ffdfac4cf8e3636eba2fe1","last_reissued_at":"2026-05-18T00:02:41.958435Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:41.958435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Superionic hydrogen in Earth's deep interior","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chris J. Pickard, Duck Young Kim, Ho-kwang Mao, Qingyang Hu, Richard J. Needs, Yu He","submitted_at":"2018-10-20T07:34:30Z","abstract_excerpt":"Superionic hydrogen was previously thought to be an exotic state predicted and confirmed only in pure H2O ice. In Earth's deep interior, H2O exists in the form of O-H groups in ultra-dense hydrous minerals, which have been proved to be stable even at the conditions of the core-mantle boundary (CMB). However, the superionic states of these hydrous minerals at high P-T have not been investigated. Using first-principles calculations, we found that pyrite structured FeO2Hx (0 <= x <= 1) and d-AlOOH, which have been proposed to be major hydrogen-bearing phases in the deep lower mantle (DLM), contai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.08766","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":""},"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":"1810.08766","created_at":"2026-05-18T00:02:41.958510+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.08766v1","created_at":"2026-05-18T00:02:41.958510+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.08766","created_at":"2026-05-18T00:02:41.958510+00:00"},{"alias_kind":"pith_short_12","alias_value":"RN2HDEAVJ6H2","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_16","alias_value":"RN2HDEAVJ6H2ETY6","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_8","alias_value":"RN2HDEAV","created_at":"2026-05-18T12:32:50.500415+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/RN2HDEAVJ6H2ETY6ZRVEFIXLWT","json":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT.json","graph_json":"https://pith.science/api/pith-number/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/graph.json","events_json":"https://pith.science/api/pith-number/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/events.json","paper":"https://pith.science/paper/RN2HDEAV"},"agent_actions":{"view_html":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT","download_json":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT.json","view_paper":"https://pith.science/paper/RN2HDEAV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.08766&json=true","fetch_graph":"https://pith.science/api/pith-number/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/graph.json","fetch_events":"https://pith.science/api/pith-number/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/action/storage_attestation","attest_author":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/action/author_attestation","sign_citation":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/action/citation_signature","submit_replication":"https://pith.science/pith/RN2HDEAVJ6H2ETY6ZRVEFIXLWT/action/replication_record"}},"created_at":"2026-05-18T00:02:41.958510+00:00","updated_at":"2026-05-18T00:02:41.958510+00:00"}