{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YGWZ76SQ67II5DIDG3KDVH6YK3","short_pith_number":"pith:YGWZ76SQ","canonical_record":{"source":{"id":"1711.00144","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-10-31T23:55:52Z","cross_cats_sorted":[],"title_canon_sha256":"fd2a44c80f17538c44c21985cba449ccf57244e46da362d38ddadc27ad8eec58","abstract_canon_sha256":"9e9f32eff57b0fb488ded3d53081006ee6db8c330f3617a32c9f7daaed13251d"},"schema_version":"1.0"},"canonical_sha256":"c1ad9ffa50f7d08e8d0336d43a9fd856f4caddcec64068f5a107a49397ea6bd6","source":{"kind":"arxiv","id":"1711.00144","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00144","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00144v2","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00144","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"pith_short_12","alias_value":"YGWZ76SQ67II","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YGWZ76SQ67II5DID","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YGWZ76SQ","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YGWZ76SQ67II5DIDG3KDVH6YK3","target":"record","payload":{"canonical_record":{"source":{"id":"1711.00144","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-10-31T23:55:52Z","cross_cats_sorted":[],"title_canon_sha256":"fd2a44c80f17538c44c21985cba449ccf57244e46da362d38ddadc27ad8eec58","abstract_canon_sha256":"9e9f32eff57b0fb488ded3d53081006ee6db8c330f3617a32c9f7daaed13251d"},"schema_version":"1.0"},"canonical_sha256":"c1ad9ffa50f7d08e8d0336d43a9fd856f4caddcec64068f5a107a49397ea6bd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:49.109986Z","signature_b64":"HVZvpYzCY6Z4NvdRQE8vLQxACUH9kduffLzCadwyyoxFHgKYZU2S9g5x0YjBeFgHQA1aGQgtfFJ/PDifTpJmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1ad9ffa50f7d08e8d0336d43a9fd856f4caddcec64068f5a107a49397ea6bd6","last_reissued_at":"2026-05-18T00:01:49.109427Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:49.109427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.00144","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":"2026-05-18T00:01:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZxaFRYPFskFBmpEybiJ6ddmmLojNbtlFGnFgA2VGUjeNVePz92eLUYwlP3yTPWAgT6ZS65JG8SDOQWs0mvYxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:30:02.705697Z"},"content_sha256":"4fea14aff3a383dba469f982eb0056b4b2935057ce6755a5dbe99bb8e7997c33","schema_version":"1.0","event_id":"sha256:4fea14aff3a383dba469f982eb0056b4b2935057ce6755a5dbe99bb8e7997c33"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YGWZ76SQ67II5DIDG3KDVH6YK3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Andreev reflection spectroscopy on Bi$_{2}$X$_{3}$ (X = Se, Te) topological insulators: Implications for the c-axis superconducting proximity effect","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. Petrovic, C. R. Granstrom, H.-C. Lei, I. Fridman, J. Y. T. Wei","submitted_at":"2017-10-31T23:55:52Z","abstract_excerpt":"Using Andreev reflection (AR) as an experimental gauge of the superconducting proximity effect (PE), we assess the topological purity of the superconductivity that is induced by the c-axis PE between an s-wave superconductor and the topological insulators Bi$_{2}$X$_{3}$ (X=Se,Te). Point-contact AR spectroscopy is performed with Nb tips on Bi$_{2}$X$_{3}$ single crystals at 4.2 K. Scanning tunneling spectroscopy is also used, to locate the Fermi level $E_F$ relative to the Dirac point in the crystals. The AR data is analyzed with Blonder-Tinkham-Klapwijk theory, taking into account tip-induced"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00144","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":"2026-05-18T00:01:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSB/nIZDYXsMCFrzTcqXFADZ9uur/oczih4REj1rW0ZS+YmRxI0jZxWN76XUJ+60uuAcxbAz1KiNjnF/pkk2BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:30:02.706040Z"},"content_sha256":"9c359d1e9c1f00b24db3625ba5d130f7c968ee7c8883bf0e8393e32cbb8b343e","schema_version":"1.0","event_id":"sha256:9c359d1e9c1f00b24db3625ba5d130f7c968ee7c8883bf0e8393e32cbb8b343e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/bundle.json","state_url":"https://pith.science/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/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":"2026-06-01T08:30:02Z","links":{"resolver":"https://pith.science/pith/YGWZ76SQ67II5DIDG3KDVH6YK3","bundle":"https://pith.science/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/bundle.json","state":"https://pith.science/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YGWZ76SQ67II5DIDG3KDVH6YK3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YGWZ76SQ67II5DIDG3KDVH6YK3","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":"9e9f32eff57b0fb488ded3d53081006ee6db8c330f3617a32c9f7daaed13251d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-10-31T23:55:52Z","title_canon_sha256":"fd2a44c80f17538c44c21985cba449ccf57244e46da362d38ddadc27ad8eec58"},"schema_version":"1.0","source":{"id":"1711.00144","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00144","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00144v2","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00144","created_at":"2026-05-18T00:01:49Z"},{"alias_kind":"pith_short_12","alias_value":"YGWZ76SQ67II","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YGWZ76SQ67II5DID","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YGWZ76SQ","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:9c359d1e9c1f00b24db3625ba5d130f7c968ee7c8883bf0e8393e32cbb8b343e","target":"graph","created_at":"2026-05-18T00:01:49Z","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":"Using Andreev reflection (AR) as an experimental gauge of the superconducting proximity effect (PE), we assess the topological purity of the superconductivity that is induced by the c-axis PE between an s-wave superconductor and the topological insulators Bi$_{2}$X$_{3}$ (X=Se,Te). Point-contact AR spectroscopy is performed with Nb tips on Bi$_{2}$X$_{3}$ single crystals at 4.2 K. Scanning tunneling spectroscopy is also used, to locate the Fermi level $E_F$ relative to the Dirac point in the crystals. The AR data is analyzed with Blonder-Tinkham-Klapwijk theory, taking into account tip-induced","authors_text":"C. Petrovic, C. R. Granstrom, H.-C. Lei, I. Fridman, J. Y. T. Wei","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-10-31T23:55:52Z","title":"Andreev reflection spectroscopy on Bi$_{2}$X$_{3}$ (X = Se, Te) topological insulators: Implications for the c-axis superconducting proximity effect"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00144","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":"sha256:4fea14aff3a383dba469f982eb0056b4b2935057ce6755a5dbe99bb8e7997c33","target":"record","created_at":"2026-05-18T00:01:49Z","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":"9e9f32eff57b0fb488ded3d53081006ee6db8c330f3617a32c9f7daaed13251d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-10-31T23:55:52Z","title_canon_sha256":"fd2a44c80f17538c44c21985cba449ccf57244e46da362d38ddadc27ad8eec58"},"schema_version":"1.0","source":{"id":"1711.00144","kind":"arxiv","version":2}},"canonical_sha256":"c1ad9ffa50f7d08e8d0336d43a9fd856f4caddcec64068f5a107a49397ea6bd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1ad9ffa50f7d08e8d0336d43a9fd856f4caddcec64068f5a107a49397ea6bd6","first_computed_at":"2026-05-18T00:01:49.109427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:49.109427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HVZvpYzCY6Z4NvdRQE8vLQxACUH9kduffLzCadwyyoxFHgKYZU2S9g5x0YjBeFgHQA1aGQgtfFJ/PDifTpJmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:49.109986Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.00144","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4fea14aff3a383dba469f982eb0056b4b2935057ce6755a5dbe99bb8e7997c33","sha256:9c359d1e9c1f00b24db3625ba5d130f7c968ee7c8883bf0e8393e32cbb8b343e"],"state_sha256":"04f0aaa68315626a19380adbe8a877db1642a1d3e3bd926338fc2d4e20b2aff4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZaX6Uu57twY2jq1g8XF5N8KxyeWJkeU5vnyt2jsVOOt3/N7XS0R4IeXWHUw1rMxIP2TO8x5HDw8MQZkvdUgEAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:30:02.708162Z","bundle_sha256":"eb159774822d4ec70897c6d5878e24acded2cc655a11025642dea0c37a261419"}}