{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GI4HZHL7IOICOTEYUBFPVVZSWJ","short_pith_number":"pith:GI4HZHL7","canonical_record":{"source":{"id":"1801.04197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-10T10:26:59Z","cross_cats_sorted":[],"title_canon_sha256":"7d1a0cd1d42204ccd50ae227ac397d4a84e087c0b8c7edbb0c8c1d87a80de9d4","abstract_canon_sha256":"a94a2260b0b8e09491a0f616c43461c04596de9815dc79e082a43d6c02a90aa5"},"schema_version":"1.0"},"canonical_sha256":"32387c9d7f4390274c98a04afad732b26a27a2954e6ce9534b1cc3c6152180f2","source":{"kind":"arxiv","id":"1801.04197","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.04197","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"arxiv_version","alias_value":"1801.04197v1","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.04197","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"pith_short_12","alias_value":"GI4HZHL7IOIC","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GI4HZHL7IOICOTEY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GI4HZHL7","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GI4HZHL7IOICOTEYUBFPVVZSWJ","target":"record","payload":{"canonical_record":{"source":{"id":"1801.04197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-10T10:26:59Z","cross_cats_sorted":[],"title_canon_sha256":"7d1a0cd1d42204ccd50ae227ac397d4a84e087c0b8c7edbb0c8c1d87a80de9d4","abstract_canon_sha256":"a94a2260b0b8e09491a0f616c43461c04596de9815dc79e082a43d6c02a90aa5"},"schema_version":"1.0"},"canonical_sha256":"32387c9d7f4390274c98a04afad732b26a27a2954e6ce9534b1cc3c6152180f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:27.571359Z","signature_b64":"WllS4MZqOVbNuyY5n6zo9kelJUBTLIYFHRkMelZ5CX09rPLaAC7wuxIVa+f4Wu+Zaxq4sEEGFhWaenfxolS/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32387c9d7f4390274c98a04afad732b26a27a2954e6ce9534b1cc3c6152180f2","last_reissued_at":"2026-05-18T00:23:27.570685Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:27.570685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.04197","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BjnFeFbyr6c038s+6/QhmkkEWwvYuOMvHtrsvyUqe85vc4mFjMY0jFjlfOqEMSWzRUoT4E5BrHPgTBDyAKq5Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:29:44.664000Z"},"content_sha256":"dcc14ee88c2332688da43dce5e7d06c6e2b5d1404b95d6984bae0b5e6a667a82","schema_version":"1.0","event_id":"sha256:dcc14ee88c2332688da43dce5e7d06c6e2b5d1404b95d6984bae0b5e6a667a82"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GI4HZHL7IOICOTEYUBFPVVZSWJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab-initio study of the Coulomb interaction in NbxCo clusters: Strong on-site versus weak non-local screening","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"E. Sasioglu, I. Mertig, L. Peters, M. I. Katsnelson","submitted_at":"2018-01-10T10:26:59Z","abstract_excerpt":"By means of ab-initio calculations in conjunction with the random-phase approximation (RPA) within the full-potential linearized augmented plane wave method we study the screening of the Coulomb interaction in NbxCo (1<=x<=9) clusters. In addition, these results are compared with pure bcc Nb bulk. We find that for all clusters the onsite Coulomb interaction in RPA is strongly screened whereas the inter-site non-local Coulomb interaction is weakly screened and for some clusters it is unscreened or even anti-screened. This is in strong contrast with pure Nb bulk, where the inter-site Coulomb int"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.04197","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"saSRUMld8sPBbiKty93I3E48hYxatvsDAWhjolgG2SkmiIIQSh6r6oz5/S7p/3vFSnvyAzpDopm0CF/7x6poBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:29:44.664373Z"},"content_sha256":"a2d4d6c0c089dec8d72029c9ddbed767a7741a2f25b326e64a36094687ab8447","schema_version":"1.0","event_id":"sha256:a2d4d6c0c089dec8d72029c9ddbed767a7741a2f25b326e64a36094687ab8447"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/bundle.json","state_url":"https://pith.science/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/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":"2026-05-27T02:29:44Z","links":{"resolver":"https://pith.science/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ","bundle":"https://pith.science/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/bundle.json","state":"https://pith.science/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GI4HZHL7IOICOTEYUBFPVVZSWJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GI4HZHL7IOICOTEYUBFPVVZSWJ","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":"a94a2260b0b8e09491a0f616c43461c04596de9815dc79e082a43d6c02a90aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-10T10:26:59Z","title_canon_sha256":"7d1a0cd1d42204ccd50ae227ac397d4a84e087c0b8c7edbb0c8c1d87a80de9d4"},"schema_version":"1.0","source":{"id":"1801.04197","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.04197","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"arxiv_version","alias_value":"1801.04197v1","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.04197","created_at":"2026-05-18T00:23:27Z"},{"alias_kind":"pith_short_12","alias_value":"GI4HZHL7IOIC","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GI4HZHL7IOICOTEY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GI4HZHL7","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:a2d4d6c0c089dec8d72029c9ddbed767a7741a2f25b326e64a36094687ab8447","target":"graph","created_at":"2026-05-18T00:23:27Z","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":"By means of ab-initio calculations in conjunction with the random-phase approximation (RPA) within the full-potential linearized augmented plane wave method we study the screening of the Coulomb interaction in NbxCo (1<=x<=9) clusters. In addition, these results are compared with pure bcc Nb bulk. We find that for all clusters the onsite Coulomb interaction in RPA is strongly screened whereas the inter-site non-local Coulomb interaction is weakly screened and for some clusters it is unscreened or even anti-screened. This is in strong contrast with pure Nb bulk, where the inter-site Coulomb int","authors_text":"E. Sasioglu, I. Mertig, L. Peters, M. I. Katsnelson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-10T10:26:59Z","title":"Ab-initio study of the Coulomb interaction in NbxCo clusters: Strong on-site versus weak non-local screening"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.04197","kind":"arxiv","version":1},"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:dcc14ee88c2332688da43dce5e7d06c6e2b5d1404b95d6984bae0b5e6a667a82","target":"record","created_at":"2026-05-18T00:23:27Z","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":"a94a2260b0b8e09491a0f616c43461c04596de9815dc79e082a43d6c02a90aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-01-10T10:26:59Z","title_canon_sha256":"7d1a0cd1d42204ccd50ae227ac397d4a84e087c0b8c7edbb0c8c1d87a80de9d4"},"schema_version":"1.0","source":{"id":"1801.04197","kind":"arxiv","version":1}},"canonical_sha256":"32387c9d7f4390274c98a04afad732b26a27a2954e6ce9534b1cc3c6152180f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32387c9d7f4390274c98a04afad732b26a27a2954e6ce9534b1cc3c6152180f2","first_computed_at":"2026-05-18T00:23:27.570685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:27.570685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WllS4MZqOVbNuyY5n6zo9kelJUBTLIYFHRkMelZ5CX09rPLaAC7wuxIVa+f4Wu+Zaxq4sEEGFhWaenfxolS/DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:27.571359Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.04197","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcc14ee88c2332688da43dce5e7d06c6e2b5d1404b95d6984bae0b5e6a667a82","sha256:a2d4d6c0c089dec8d72029c9ddbed767a7741a2f25b326e64a36094687ab8447"],"state_sha256":"2c4ff6fcfc7516bbb0dcb2d9207656844388bee1d311ca6287d8fca67d22cc6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FMuldfpfdk4mMWJXCy0C/LBJnpjrJIJoDoo81assj0n2CaeJZMNHf0sSbCLZNWyzDa5rTF3nQTLr0yP93RwmAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:29:44.666619Z","bundle_sha256":"4e01d72ff5ca429c67c966ce7ce727eaea9d3b7fc12ec4ca58462bfbdce9ed70"}}