{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:F7SB56OYI23NVQMYWLEPCL5DW5","short_pith_number":"pith:F7SB56OY","canonical_record":{"source":{"id":"1805.05694","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-15T10:39:33Z","cross_cats_sorted":[],"title_canon_sha256":"08605cd042f0bd4cfa418936f39afcc41a936af6a24f0752202a062fc9cd54de","abstract_canon_sha256":"45fc739589316c0b194c94275914346c682b6fc942b640997b953c9c1ad80c71"},"schema_version":"1.0"},"canonical_sha256":"2fe41ef9d846b6dac198b2c8f12fa3b766e5cb0b81ef6203e9b386a909585b3f","source":{"kind":"arxiv","id":"1805.05694","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05694","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05694v2","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05694","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"pith_short_12","alias_value":"F7SB56OYI23N","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"F7SB56OYI23NVQMY","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"F7SB56OY","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:F7SB56OYI23NVQMYWLEPCL5DW5","target":"record","payload":{"canonical_record":{"source":{"id":"1805.05694","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-15T10:39:33Z","cross_cats_sorted":[],"title_canon_sha256":"08605cd042f0bd4cfa418936f39afcc41a936af6a24f0752202a062fc9cd54de","abstract_canon_sha256":"45fc739589316c0b194c94275914346c682b6fc942b640997b953c9c1ad80c71"},"schema_version":"1.0"},"canonical_sha256":"2fe41ef9d846b6dac198b2c8f12fa3b766e5cb0b81ef6203e9b386a909585b3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:07.685906Z","signature_b64":"8omNK0j1wBjysRf/zfw0u8LS7hOMp0V1jMf7tb2eOxbS8OGtVNkfYDa3j7j5iQ7FmWU0VcC+1v4ZHLbL2u4lDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fe41ef9d846b6dac198b2c8f12fa3b766e5cb0b81ef6203e9b386a909585b3f","last_reissued_at":"2026-05-18T00:04:07.685131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:07.685131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.05694","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FWGg46fr/nPygND4BiPI5cU8DM2vzVP0vKTy2HlUXgge+JNVHhEs9bOqTiwc7Y0W7OS1MBPcmFz7pjTq9cCABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:54:05.785747Z"},"content_sha256":"14fa6923746d89347c90104f7bef58ed526ebef2472363b940cb7f1c836eb58b","schema_version":"1.0","event_id":"sha256:14fa6923746d89347c90104f7bef58ed526ebef2472363b940cb7f1c836eb58b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:F7SB56OYI23NVQMYWLEPCL5DW5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structural properties of Silicon-Germanium and Germanium-Silicon Core-Shell Nanowires","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chathurangi Kumarasinghe, Conn O'Rourke, David R. Bowler, Shereif Y. Mujahed, Tsuyoshi Miyazaki","submitted_at":"2018-05-15T10:39:33Z","abstract_excerpt":"Core-shell nanowires made of Si and Ge can be grown experimentally with excellent control for different sizes of both core and shell. We have studied the structural properties of Si/Ge and Ge/Si core-shell nanowires aligned along the $[110]$ direction, with diameters up to 10.2~nm and varying core to shell ratios, using linear scaling Density Functional Theory (DFT). We show that Vegard's law, which is often used to predict the axial lattice constant, can lead to an error of up to 1\\%, underlining the need for a detailed \\emph{ab initio} atomistic treatment of the nanowire structure. We analys"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05694","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yYqs/Flvf2WjCQsFkULUmaDuXol/MfXaJT02jsdA+KtoqoqsWSMkxKWzHLBe1YwG/AmuHA21qXwM8FZNemvnAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:54:05.786121Z"},"content_sha256":"c8564301e9252761d360e093b1d948c633bfa85a15705af4f4a921bfad14ec08","schema_version":"1.0","event_id":"sha256:c8564301e9252761d360e093b1d948c633bfa85a15705af4f4a921bfad14ec08"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F7SB56OYI23NVQMYWLEPCL5DW5/bundle.json","state_url":"https://pith.science/pith/F7SB56OYI23NVQMYWLEPCL5DW5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F7SB56OYI23NVQMYWLEPCL5DW5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T18:54:05Z","links":{"resolver":"https://pith.science/pith/F7SB56OYI23NVQMYWLEPCL5DW5","bundle":"https://pith.science/pith/F7SB56OYI23NVQMYWLEPCL5DW5/bundle.json","state":"https://pith.science/pith/F7SB56OYI23NVQMYWLEPCL5DW5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F7SB56OYI23NVQMYWLEPCL5DW5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:F7SB56OYI23NVQMYWLEPCL5DW5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"45fc739589316c0b194c94275914346c682b6fc942b640997b953c9c1ad80c71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-15T10:39:33Z","title_canon_sha256":"08605cd042f0bd4cfa418936f39afcc41a936af6a24f0752202a062fc9cd54de"},"schema_version":"1.0","source":{"id":"1805.05694","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05694","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05694v2","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05694","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"pith_short_12","alias_value":"F7SB56OYI23N","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"F7SB56OYI23NVQMY","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"F7SB56OY","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:c8564301e9252761d360e093b1d948c633bfa85a15705af4f4a921bfad14ec08","target":"graph","created_at":"2026-05-18T00:04:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Core-shell nanowires made of Si and Ge can be grown experimentally with excellent control for different sizes of both core and shell. We have studied the structural properties of Si/Ge and Ge/Si core-shell nanowires aligned along the $[110]$ direction, with diameters up to 10.2~nm and varying core to shell ratios, using linear scaling Density Functional Theory (DFT). We show that Vegard's law, which is often used to predict the axial lattice constant, can lead to an error of up to 1\\%, underlining the need for a detailed \\emph{ab initio} atomistic treatment of the nanowire structure. We analys","authors_text":"Chathurangi Kumarasinghe, Conn O'Rourke, David R. Bowler, Shereif Y. Mujahed, Tsuyoshi Miyazaki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-15T10:39:33Z","title":"Structural properties of Silicon-Germanium and Germanium-Silicon Core-Shell Nanowires"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05694","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:14fa6923746d89347c90104f7bef58ed526ebef2472363b940cb7f1c836eb58b","target":"record","created_at":"2026-05-18T00:04:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"45fc739589316c0b194c94275914346c682b6fc942b640997b953c9c1ad80c71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-15T10:39:33Z","title_canon_sha256":"08605cd042f0bd4cfa418936f39afcc41a936af6a24f0752202a062fc9cd54de"},"schema_version":"1.0","source":{"id":"1805.05694","kind":"arxiv","version":2}},"canonical_sha256":"2fe41ef9d846b6dac198b2c8f12fa3b766e5cb0b81ef6203e9b386a909585b3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2fe41ef9d846b6dac198b2c8f12fa3b766e5cb0b81ef6203e9b386a909585b3f","first_computed_at":"2026-05-18T00:04:07.685131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:07.685131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8omNK0j1wBjysRf/zfw0u8LS7hOMp0V1jMf7tb2eOxbS8OGtVNkfYDa3j7j5iQ7FmWU0VcC+1v4ZHLbL2u4lDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:07.685906Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.05694","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14fa6923746d89347c90104f7bef58ed526ebef2472363b940cb7f1c836eb58b","sha256:c8564301e9252761d360e093b1d948c633bfa85a15705af4f4a921bfad14ec08"],"state_sha256":"575497d183facc65c369f622a9bac3847bad680d0b2389b894abcc41df0a9071"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oDb3nIjH0DBBJERsPE2OzRvWFQ9987f03VDUztI8tsD9iN0+NFXQ+g/7/q0w05UKtG18acFnbKwUorXrt2eYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:54:05.788412Z","bundle_sha256":"aee073cad4d8044c1f9ef0c049edfdaa3c7b075d759d2faa786da21640849640"}}