{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RCMRKXUVGZBZX7OWLYGEDQRM4O","short_pith_number":"pith:RCMRKXUV","canonical_record":{"source":{"id":"1803.02709","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-03-07T15:16:02Z","cross_cats_sorted":[],"title_canon_sha256":"a65b35d4ff828930994323cba5610925e3b8ad1343838ebb25dbeddcd2a2a71d","abstract_canon_sha256":"0c10ad6b8c53315dd5dadcc3335e23fe65f6c2d38eee31eab69d95d3010cf47a"},"schema_version":"1.0"},"canonical_sha256":"8899155e9536439bfdd65e0c41c22ce3b0ccc7602e0fbbdf0ac2b645e861372f","source":{"kind":"arxiv","id":"1803.02709","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02709","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02709v2","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02709","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"pith_short_12","alias_value":"RCMRKXUVGZBZ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RCMRKXUVGZBZX7OW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RCMRKXUV","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RCMRKXUVGZBZX7OWLYGEDQRM4O","target":"record","payload":{"canonical_record":{"source":{"id":"1803.02709","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-03-07T15:16:02Z","cross_cats_sorted":[],"title_canon_sha256":"a65b35d4ff828930994323cba5610925e3b8ad1343838ebb25dbeddcd2a2a71d","abstract_canon_sha256":"0c10ad6b8c53315dd5dadcc3335e23fe65f6c2d38eee31eab69d95d3010cf47a"},"schema_version":"1.0"},"canonical_sha256":"8899155e9536439bfdd65e0c41c22ce3b0ccc7602e0fbbdf0ac2b645e861372f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:59.550683Z","signature_b64":"H8wKbbhAovkyEGZKnNTJqBxsniBRveUStFDzkYWlHlGB20FS6VfTgTAdeFyaCpr+ajVHgbcXaNrvQbz7Lxg0Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8899155e9536439bfdd65e0c41c22ce3b0ccc7602e0fbbdf0ac2b645e861372f","last_reissued_at":"2026-05-18T00:17:59.550032Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:59.550032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.02709","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":"2026-05-18T00:17:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jn4IB4I14vY4lW3I3DVQ1QXsSimtx5wfRNmvFI9byeJrda9/RiJBwGVlXNpME2G21Okd910CJ/R6qEaQfRPeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:01:11.813635Z"},"content_sha256":"b6f57cb9f8ba1599179e146810b12163da1a8ea77295b30d7620b33e0934b84c","schema_version":"1.0","event_id":"sha256:b6f57cb9f8ba1599179e146810b12163da1a8ea77295b30d7620b33e0934b84c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RCMRKXUVGZBZX7OWLYGEDQRM4O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconducting nanoribbon with a constriction: A quantum-confined Josephson junction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Perali, L. Covaci, L. Flammia, L.-F. Zhang, M. V. Milo\\v{s}evi\\'c","submitted_at":"2018-03-07T15:16:02Z","abstract_excerpt":"Extended defects are known to strongly affect nanoscale superconductors. Here we report the properties of superconducting nanoribbons with a constriction formed between two adjacent step-edges, by solving the Bogoliubov-de Gennes equations self-consistently in the regime where quantum confinement is important. Since the quantum resonances of the superconducting gap in the constricted area are different from the rest of the nanoribbon, such constriction forms a quantum-confined S-S'-S Josephson junction, with a broadly tunable performance depending on the length and width of the constriction wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02709","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":"2026-05-18T00:17:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nDa0flSqqmtY1QffnUfr2eV5T8a5dgHfvI3sb/z5kRm0/A5gnPAQKjz3ZR746homCZv2WrENbdYOoe1x/AIxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:01:11.814048Z"},"content_sha256":"771d2b123a9271f9ef1a4bb72a98766352aad6e10bf9dd2e05b033de075879bc","schema_version":"1.0","event_id":"sha256:771d2b123a9271f9ef1a4bb72a98766352aad6e10bf9dd2e05b033de075879bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/bundle.json","state_url":"https://pith.science/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/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":"2026-05-26T13:01:11Z","links":{"resolver":"https://pith.science/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O","bundle":"https://pith.science/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/bundle.json","state":"https://pith.science/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RCMRKXUVGZBZX7OWLYGEDQRM4O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RCMRKXUVGZBZX7OWLYGEDQRM4O","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":"0c10ad6b8c53315dd5dadcc3335e23fe65f6c2d38eee31eab69d95d3010cf47a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-03-07T15:16:02Z","title_canon_sha256":"a65b35d4ff828930994323cba5610925e3b8ad1343838ebb25dbeddcd2a2a71d"},"schema_version":"1.0","source":{"id":"1803.02709","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02709","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02709v2","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02709","created_at":"2026-05-18T00:17:59Z"},{"alias_kind":"pith_short_12","alias_value":"RCMRKXUVGZBZ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RCMRKXUVGZBZX7OW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RCMRKXUV","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:771d2b123a9271f9ef1a4bb72a98766352aad6e10bf9dd2e05b033de075879bc","target":"graph","created_at":"2026-05-18T00:17:59Z","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":"Extended defects are known to strongly affect nanoscale superconductors. Here we report the properties of superconducting nanoribbons with a constriction formed between two adjacent step-edges, by solving the Bogoliubov-de Gennes equations self-consistently in the regime where quantum confinement is important. Since the quantum resonances of the superconducting gap in the constricted area are different from the rest of the nanoribbon, such constriction forms a quantum-confined S-S'-S Josephson junction, with a broadly tunable performance depending on the length and width of the constriction wi","authors_text":"A. Perali, L. Covaci, L. Flammia, L.-F. Zhang, M. V. Milo\\v{s}evi\\'c","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-03-07T15:16:02Z","title":"Superconducting nanoribbon with a constriction: A quantum-confined Josephson junction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02709","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:b6f57cb9f8ba1599179e146810b12163da1a8ea77295b30d7620b33e0934b84c","target":"record","created_at":"2026-05-18T00:17:59Z","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":"0c10ad6b8c53315dd5dadcc3335e23fe65f6c2d38eee31eab69d95d3010cf47a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-03-07T15:16:02Z","title_canon_sha256":"a65b35d4ff828930994323cba5610925e3b8ad1343838ebb25dbeddcd2a2a71d"},"schema_version":"1.0","source":{"id":"1803.02709","kind":"arxiv","version":2}},"canonical_sha256":"8899155e9536439bfdd65e0c41c22ce3b0ccc7602e0fbbdf0ac2b645e861372f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8899155e9536439bfdd65e0c41c22ce3b0ccc7602e0fbbdf0ac2b645e861372f","first_computed_at":"2026-05-18T00:17:59.550032Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:59.550032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H8wKbbhAovkyEGZKnNTJqBxsniBRveUStFDzkYWlHlGB20FS6VfTgTAdeFyaCpr+ajVHgbcXaNrvQbz7Lxg0Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:59.550683Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.02709","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b6f57cb9f8ba1599179e146810b12163da1a8ea77295b30d7620b33e0934b84c","sha256:771d2b123a9271f9ef1a4bb72a98766352aad6e10bf9dd2e05b033de075879bc"],"state_sha256":"f697c8969ddf56796c34bc036340b67b359157b7f551e6661d332b9bae8ca612"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DPHnwy2bkTtE8GiVaRVWu3HGS6qcpHMmK2Q/oSrclo85OjI5xyRqkjzZ4uFX5z8nOZqZf+SuFL9ZZ/LzNjsaCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:01:11.816168Z","bundle_sha256":"c9a938fec781365cb8d9d4fa4ad4aef80041da24049cd66718dd26127be7a08c"}}