{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:C2ZYTLDS65ZNM6HUUQ2PMKADXH","short_pith_number":"pith:C2ZYTLDS","canonical_record":{"source":{"id":"1505.04812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-05-18T20:33:52Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"fdd2492e7e5b7f6b3528d7cf95691b90e180e088dbfebe98d04caf4f0529740a","abstract_canon_sha256":"bfa3faac35699c17dd847b077ebc6e60a7f2fed02b43a3779f624cf7c370ef20"},"schema_version":"1.0"},"canonical_sha256":"16b389ac72f772d678f4a434f62803b9e321f3004d38fb38bf99b183a135f1c6","source":{"kind":"arxiv","id":"1505.04812","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.04812","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"1505.04812v1","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.04812","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"C2ZYTLDS65ZN","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"C2ZYTLDS65ZNM6HU","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"C2ZYTLDS","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:C2ZYTLDS65ZNM6HUUQ2PMKADXH","target":"record","payload":{"canonical_record":{"source":{"id":"1505.04812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-05-18T20:33:52Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"fdd2492e7e5b7f6b3528d7cf95691b90e180e088dbfebe98d04caf4f0529740a","abstract_canon_sha256":"bfa3faac35699c17dd847b077ebc6e60a7f2fed02b43a3779f624cf7c370ef20"},"schema_version":"1.0"},"canonical_sha256":"16b389ac72f772d678f4a434f62803b9e321f3004d38fb38bf99b183a135f1c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:59.796227Z","signature_b64":"NA94NuN3kQR8Z/qH3YSe8cvmefkRqI8KWHvmqrDxVg/N2MJnPAh/2An5ju9MSmOldUPPoaDt/QWX/BpDV7rMCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16b389ac72f772d678f4a434f62803b9e321f3004d38fb38bf99b183a135f1c6","last_reissued_at":"2026-05-18T01:09:59.795632Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:59.795632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.04812","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":"2026-05-18T01:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FRD54qBXUm9L0ibMFUUsK2tmee2hv6Tm5qAbG3dwr4mbbeA8Gjf+wiu1XS5vj40i9gPswUOGd6IDfu9l4/x3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:20:52.917578Z"},"content_sha256":"22b6a5236985f043784299819c4211340ce2d4856c528f6fadd701f7ffb14ab6","schema_version":"1.0","event_id":"sha256:22b6a5236985f043784299819c4211340ce2d4856c528f6fadd701f7ffb14ab6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:C2ZYTLDS65ZNM6HUUQ2PMKADXH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Specular Interband Andreev Reflections in Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"C. Handschin, C. R. Dean, D. K. Efetov, J. Hone, J. Shuang, K. B. Efetov, K. Watanabe, L. Wang, P. Kim, R. Cava, T. Taniguchi","submitted_at":"2015-05-18T20:33:52Z","abstract_excerpt":"Electrons incident from a normal metal onto a superconductor are reflected back as holes - a process called Andreev reflection. In a normal metal where the Fermi energy is much larger than a typical superconducting gap, the reflected hole retraces the path taken by the incident electron. In graphene with ultra low disorder, however, the Fermi energy can be tuned to be smaller than the superconducting gap. In this unusual limit, the holes are expected to be reflected specularly at the superconductor-graphene interface due to the onset of interband Andreev processes, where the effective mass of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.04812","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":"2026-05-18T01:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w7mpc7zNGpL4hP8oTPqhghyFJ52XMqSDFXan54AtD6SMzhoNT0zqN++cec2ZGxQCYXO4zQ8J6ljK5PkELnq2Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:20:52.918254Z"},"content_sha256":"f17101e88dcf2b6f5d60d1a59850d7d5f7ad2f643b1a0857b9125701ea1d918c","schema_version":"1.0","event_id":"sha256:f17101e88dcf2b6f5d60d1a59850d7d5f7ad2f643b1a0857b9125701ea1d918c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/bundle.json","state_url":"https://pith.science/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/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":"2026-05-21T14:20:52Z","links":{"resolver":"https://pith.science/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH","bundle":"https://pith.science/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/bundle.json","state":"https://pith.science/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C2ZYTLDS65ZNM6HUUQ2PMKADXH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:C2ZYTLDS65ZNM6HUUQ2PMKADXH","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":"bfa3faac35699c17dd847b077ebc6e60a7f2fed02b43a3779f624cf7c370ef20","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-05-18T20:33:52Z","title_canon_sha256":"fdd2492e7e5b7f6b3528d7cf95691b90e180e088dbfebe98d04caf4f0529740a"},"schema_version":"1.0","source":{"id":"1505.04812","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.04812","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"1505.04812v1","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.04812","created_at":"2026-05-18T01:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"C2ZYTLDS65ZN","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"C2ZYTLDS65ZNM6HU","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"C2ZYTLDS","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:f17101e88dcf2b6f5d60d1a59850d7d5f7ad2f643b1a0857b9125701ea1d918c","target":"graph","created_at":"2026-05-18T01:09:59Z","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":"Electrons incident from a normal metal onto a superconductor are reflected back as holes - a process called Andreev reflection. In a normal metal where the Fermi energy is much larger than a typical superconducting gap, the reflected hole retraces the path taken by the incident electron. In graphene with ultra low disorder, however, the Fermi energy can be tuned to be smaller than the superconducting gap. In this unusual limit, the holes are expected to be reflected specularly at the superconductor-graphene interface due to the onset of interband Andreev processes, where the effective mass of ","authors_text":"C. Handschin, C. R. Dean, D. K. Efetov, J. Hone, J. Shuang, K. B. Efetov, K. Watanabe, L. Wang, P. Kim, R. Cava, T. Taniguchi","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-05-18T20:33:52Z","title":"Specular Interband Andreev Reflections in Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.04812","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":"sha256:22b6a5236985f043784299819c4211340ce2d4856c528f6fadd701f7ffb14ab6","target":"record","created_at":"2026-05-18T01:09:59Z","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":"bfa3faac35699c17dd847b077ebc6e60a7f2fed02b43a3779f624cf7c370ef20","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-05-18T20:33:52Z","title_canon_sha256":"fdd2492e7e5b7f6b3528d7cf95691b90e180e088dbfebe98d04caf4f0529740a"},"schema_version":"1.0","source":{"id":"1505.04812","kind":"arxiv","version":1}},"canonical_sha256":"16b389ac72f772d678f4a434f62803b9e321f3004d38fb38bf99b183a135f1c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16b389ac72f772d678f4a434f62803b9e321f3004d38fb38bf99b183a135f1c6","first_computed_at":"2026-05-18T01:09:59.795632Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:59.795632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NA94NuN3kQR8Z/qH3YSe8cvmefkRqI8KWHvmqrDxVg/N2MJnPAh/2An5ju9MSmOldUPPoaDt/QWX/BpDV7rMCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:59.796227Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.04812","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22b6a5236985f043784299819c4211340ce2d4856c528f6fadd701f7ffb14ab6","sha256:f17101e88dcf2b6f5d60d1a59850d7d5f7ad2f643b1a0857b9125701ea1d918c"],"state_sha256":"a99b318fe97d7ac9499e8f5b56630308776e9a0ee4fd0e6213c312afa2eaac64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I/cCEr+qrQs/Z7GOFKhvb9KAuVPyJDEg2cdpYxxha5DfTChX9V0G8YaKVb+3cGEjlYsNgHexe46IVfjcybB/DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T14:20:52.920825Z","bundle_sha256":"0a10d03baad2f7e90c51dd9160f3c36fd0453cbb08eb61f0ae111ba0c8d099ed"}}