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In particular, we focus on how the addition of a hydrogen atom affects the ground state geometry, total energy and the first excited electronic level gap of an Si$_{n}$ cluster. We discuss the nature of bonding of hydrogen in these clusters. We find that hydrogen bonds with two silicon atoms only in Si$_{2}$H, Si$_{3}$H and Si$_{5}$H clusters, while in other clusters (i.e. Si$_{4}$H, Si$_{6}$H, Si$_{7}$H, Si$_{8}$H, Si$_{9}$H and Si$_{10}$H) hydrogen"},"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":"cond-mat/0108426","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-08-27T12:09:42Z","cross_cats_sorted":["cond-mat.dis-nn"],"title_canon_sha256":"c5e61120e162578683d6ac0a72c364566b6d0bdbb29184a85e3e6b612cc34018","abstract_canon_sha256":"fa461ef8cc3fd8fb4bfba1ae810a70ef5c2ea77e22db9ba6d682350ef7da068c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:26:11.493889Z","signature_b64":"96hubmIbfr7E9Omfn+gJD7IZN2tzA9Rmlm8c4SQzD2EB1GFXab4r7fMgczznRbzjAwHIXJSJPvEmPEQgDp+8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7eeb3099c61c66c4f4e665feb4322b45c6f76ff7ed8ea80a8c566320535338a5","last_reissued_at":"2026-07-04T16:26:11.493466Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:26:11.493466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Effect of hydrogen on ground state structures of small silicon clusters","license":"","headline":"","cross_cats":["cond-mat.dis-nn"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. 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We find that hydrogen bonds with two silicon atoms only in Si$_{2}$H, Si$_{3}$H and Si$_{5}$H clusters, while in other clusters (i.e. Si$_{4}$H, Si$_{6}$H, Si$_{7}$H, Si$_{8}$H, Si$_{9}$H and Si$_{10}$H) hydrogen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0108426","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/cond-mat/0108426/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":"cond-mat/0108426","created_at":"2026-07-04T16:26:11.493532+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0108426v1","created_at":"2026-07-04T16:26:11.493532+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0108426","created_at":"2026-07-04T16:26:11.493532+00:00"},{"alias_kind":"pith_short_12","alias_value":"P3VTBGOGDRTM","created_at":"2026-07-04T16:26:11.493532+00:00"},{"alias_kind":"pith_short_16","alias_value":"P3VTBGOGDRTMJ5HG","created_at":"2026-07-04T16:26:11.493532+00:00"},{"alias_kind":"pith_short_8","alias_value":"P3VTBGOG","created_at":"2026-07-04T16:26:11.493532+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/P3VTBGOGDRTMJ5HGMX7LIMRLIX","json":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX.json","graph_json":"https://pith.science/api/pith-number/P3VTBGOGDRTMJ5HGMX7LIMRLIX/graph.json","events_json":"https://pith.science/api/pith-number/P3VTBGOGDRTMJ5HGMX7LIMRLIX/events.json","paper":"https://pith.science/paper/P3VTBGOG"},"agent_actions":{"view_html":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX","download_json":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX.json","view_paper":"https://pith.science/paper/P3VTBGOG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0108426&json=true","fetch_graph":"https://pith.science/api/pith-number/P3VTBGOGDRTMJ5HGMX7LIMRLIX/graph.json","fetch_events":"https://pith.science/api/pith-number/P3VTBGOGDRTMJ5HGMX7LIMRLIX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX/action/storage_attestation","attest_author":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX/action/author_attestation","sign_citation":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX/action/citation_signature","submit_replication":"https://pith.science/pith/P3VTBGOGDRTMJ5HGMX7LIMRLIX/action/replication_record"}},"created_at":"2026-07-04T16:26:11.493532+00:00","updated_at":"2026-07-04T16:26:11.493532+00:00"}