{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:A6WBJYA2S4PQ3LDRU3SFFRBV3Z","short_pith_number":"pith:A6WBJYA2","schema_version":"1.0","canonical_sha256":"07ac14e01a971f0dac71a6e452c435de705f90d6bdc3469bac8b87af1f9dc415","source":{"kind":"arxiv","id":"1404.1707","version":1},"attestation_state":"computed","paper":{"title":"A new superconductor derived from topological insulator heterostructure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Kouji Segawa, Satoshi Sasaki, Yoichi Ando","submitted_at":"2014-04-07T09:27:29Z","abstract_excerpt":"Topological superconductors (TSCs) are of significant current interest because they offer promising platforms for finding Majorana fermions. Here we report a new superconductor synthesized by intercalating Cu into a naturally-formed topological insulator (TI) heterostructure consisting of Bi2Se3 TI units separated by nontopological PbSe units. For the first time in a TI-based superconductor, the specific-heat behavior of this material suggests the occurrence of unconventional superconductivity with gap nodes. The existence of gap nodes in a strongly spin-orbit coupled superconductor would give"},"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":"1404.1707","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-04-07T09:27:29Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"364c026b763737c18bbb60cedec7bfb6a2ac7f21768d8de67171b10bf5633b04","abstract_canon_sha256":"62a51947d9e7657d9ea6aa7a3ddc7048dd2e1b0352b2476e846d95745b5069ba"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:37.077143Z","signature_b64":"LBmMLBR9ly8pJIlIv4e2vThNO6+xdphjOhY+fcaBEX8rOxEhjOH7shZa+jWiY1BjNvwoSXPIk2RR4QbMYKhFAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"07ac14e01a971f0dac71a6e452c435de705f90d6bdc3469bac8b87af1f9dc415","last_reissued_at":"2026-05-18T01:43:37.076680Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:37.076680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A new superconductor derived from topological insulator heterostructure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Kouji Segawa, Satoshi Sasaki, Yoichi Ando","submitted_at":"2014-04-07T09:27:29Z","abstract_excerpt":"Topological superconductors (TSCs) are of significant current interest because they offer promising platforms for finding Majorana fermions. Here we report a new superconductor synthesized by intercalating Cu into a naturally-formed topological insulator (TI) heterostructure consisting of Bi2Se3 TI units separated by nontopological PbSe units. For the first time in a TI-based superconductor, the specific-heat behavior of this material suggests the occurrence of unconventional superconductivity with gap nodes. The existence of gap nodes in a strongly spin-orbit coupled superconductor would give"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.1707","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1404.1707","created_at":"2026-05-18T01:43:37.076753+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.1707v1","created_at":"2026-05-18T01:43:37.076753+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.1707","created_at":"2026-05-18T01:43:37.076753+00:00"},{"alias_kind":"pith_short_12","alias_value":"A6WBJYA2S4PQ","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_16","alias_value":"A6WBJYA2S4PQ3LDR","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_8","alias_value":"A6WBJYA2","created_at":"2026-05-18T12:28:19.803747+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/A6WBJYA2S4PQ3LDRU3SFFRBV3Z","json":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z.json","graph_json":"https://pith.science/api/pith-number/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/graph.json","events_json":"https://pith.science/api/pith-number/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/events.json","paper":"https://pith.science/paper/A6WBJYA2"},"agent_actions":{"view_html":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z","download_json":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z.json","view_paper":"https://pith.science/paper/A6WBJYA2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.1707&json=true","fetch_graph":"https://pith.science/api/pith-number/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/graph.json","fetch_events":"https://pith.science/api/pith-number/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/action/storage_attestation","attest_author":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/action/author_attestation","sign_citation":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/action/citation_signature","submit_replication":"https://pith.science/pith/A6WBJYA2S4PQ3LDRU3SFFRBV3Z/action/replication_record"}},"created_at":"2026-05-18T01:43:37.076753+00:00","updated_at":"2026-05-18T01:43:37.076753+00:00"}