{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:DGNLWSJPOHLT57YX6A2DIRYHKV","short_pith_number":"pith:DGNLWSJP","schema_version":"1.0","canonical_sha256":"199abb492f71d73eff17f0343447075545d693fff8349891f65ec82c3ddd349a","source":{"kind":"arxiv","id":"0710.1971","version":2},"attestation_state":"computed","paper":{"title":"Hydrogen on graphene: Electronic structure, total energy, structural distortions, and magnetism from first-principles calculations","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. I. Lichtenstein, D. W. Boukhvalov, M. I. Katsnelson","submitted_at":"2007-10-10T10:47:51Z","abstract_excerpt":"Density functional calculations of electronic structure, total energy, structural distortions, and magnetism for hydrogenated single-layer, bilayer, and multi-layer graphene are performed. It is found that hydrogen-induced magnetism can survives only at very low concentrations of hydrogen (single-atom regime) whereas hydrogen pairs with optimized structure are usually nonmagnetic. Chemisorption energy as a function of hydrogen concentration is calculated, as well as energy barriers for hydrogen binding and release. The results confirm that graphene can be perspective material for hydrogen stor"},"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":"0710.1971","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2007-10-10T10:47:51Z","cross_cats_sorted":[],"title_canon_sha256":"81f7c22169760c55a8371b7358b9bf9db0c471c4c6f9d877fc8a2047a887ebf7","abstract_canon_sha256":"cfaea6ca441276ad712fdbf0b6b47c4872517d077f75f9c08a2b972dbe7bede6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:07:00.644677Z","signature_b64":"W3E/WMVorxz5i8HDJA29EgbwTjz2+lQJiHR/4BWEdrsuXK1EYWuGysMY2ok6GfXsafwTAVlPobdPudDOMSJkDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"199abb492f71d73eff17f0343447075545d693fff8349891f65ec82c3ddd349a","last_reissued_at":"2026-07-04T15:07:00.644198Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:07:00.644198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hydrogen on graphene: Electronic structure, total energy, structural distortions, and magnetism from first-principles calculations","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. I. Lichtenstein, D. W. Boukhvalov, M. I. Katsnelson","submitted_at":"2007-10-10T10:47:51Z","abstract_excerpt":"Density functional calculations of electronic structure, total energy, structural distortions, and magnetism for hydrogenated single-layer, bilayer, and multi-layer graphene are performed. It is found that hydrogen-induced magnetism can survives only at very low concentrations of hydrogen (single-atom regime) whereas hydrogen pairs with optimized structure are usually nonmagnetic. Chemisorption energy as a function of hydrogen concentration is calculated, as well as energy barriers for hydrogen binding and release. The results confirm that graphene can be perspective material for hydrogen stor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0710.1971","kind":"arxiv","version":2},"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/0710.1971/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":"0710.1971","created_at":"2026-07-04T15:07:00.644262+00:00"},{"alias_kind":"arxiv_version","alias_value":"0710.1971v2","created_at":"2026-07-04T15:07:00.644262+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0710.1971","created_at":"2026-07-04T15:07:00.644262+00:00"},{"alias_kind":"pith_short_12","alias_value":"DGNLWSJPOHLT","created_at":"2026-07-04T15:07:00.644262+00:00"},{"alias_kind":"pith_short_16","alias_value":"DGNLWSJPOHLT57YX","created_at":"2026-07-04T15:07:00.644262+00:00"},{"alias_kind":"pith_short_8","alias_value":"DGNLWSJP","created_at":"2026-07-04T15:07:00.644262+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/DGNLWSJPOHLT57YX6A2DIRYHKV","json":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV.json","graph_json":"https://pith.science/api/pith-number/DGNLWSJPOHLT57YX6A2DIRYHKV/graph.json","events_json":"https://pith.science/api/pith-number/DGNLWSJPOHLT57YX6A2DIRYHKV/events.json","paper":"https://pith.science/paper/DGNLWSJP"},"agent_actions":{"view_html":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV","download_json":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV.json","view_paper":"https://pith.science/paper/DGNLWSJP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0710.1971&json=true","fetch_graph":"https://pith.science/api/pith-number/DGNLWSJPOHLT57YX6A2DIRYHKV/graph.json","fetch_events":"https://pith.science/api/pith-number/DGNLWSJPOHLT57YX6A2DIRYHKV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV/action/storage_attestation","attest_author":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV/action/author_attestation","sign_citation":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV/action/citation_signature","submit_replication":"https://pith.science/pith/DGNLWSJPOHLT57YX6A2DIRYHKV/action/replication_record"}},"created_at":"2026-07-04T15:07:00.644262+00:00","updated_at":"2026-07-04T15:07:00.644262+00:00"}