{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:K5NYZMK4GTXBGBLNJPBPB63FFU","short_pith_number":"pith:K5NYZMK4","canonical_record":{"source":{"id":"1009.6228","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-30T19:42:46Z","cross_cats_sorted":[],"title_canon_sha256":"22230fe6bc695f9fed486c1ca4bc32da37b408497b87a5e1b1cedc707d24e0f6","abstract_canon_sha256":"b5bd578341a5647ea92de2691fe090b7e9931d2be66cd84172995af503aba2c0"},"schema_version":"1.0"},"canonical_sha256":"575b8cb15c34ee13056d4bc2f0fb652d0b692e1848ba50647ad0e5a13e90f591","source":{"kind":"arxiv","id":"1009.6228","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.6228","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"arxiv_version","alias_value":"1009.6228v2","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.6228","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"pith_short_12","alias_value":"K5NYZMK4GTXB","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"K5NYZMK4GTXBGBLN","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"K5NYZMK4","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:K5NYZMK4GTXBGBLNJPBPB63FFU","target":"record","payload":{"canonical_record":{"source":{"id":"1009.6228","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-30T19:42:46Z","cross_cats_sorted":[],"title_canon_sha256":"22230fe6bc695f9fed486c1ca4bc32da37b408497b87a5e1b1cedc707d24e0f6","abstract_canon_sha256":"b5bd578341a5647ea92de2691fe090b7e9931d2be66cd84172995af503aba2c0"},"schema_version":"1.0"},"canonical_sha256":"575b8cb15c34ee13056d4bc2f0fb652d0b692e1848ba50647ad0e5a13e90f591","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:23:47.972487Z","signature_b64":"szqk0Mdp/YeFDYvRJdaG3yP7coJwQiQwda2F0U0AcHgNt4aYEglplOMWc3IdZeUqR+bkoiG4ithE4olDs4h+Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"575b8cb15c34ee13056d4bc2f0fb652d0b692e1848ba50647ad0e5a13e90f591","last_reissued_at":"2026-05-18T02:23:47.971863Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:23:47.971863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.6228","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":"2026-05-18T02:23:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lz4JQHhIsuk+KRZkg50PvhfyZoSkQf67pTKE+NVyzne8EU8ctM4q2elb01nvvYc7yat3ijcZ8Xj8vxXE11g9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T16:43:28.701448Z"},"content_sha256":"30150cc07cbb29fb376197abce6ca366b3c49f4fcfa7cf19c8287c09a91c5c59","schema_version":"1.0","event_id":"sha256:30150cc07cbb29fb376197abce6ca366b3c49f4fcfa7cf19c8287c09a91c5c59"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:K5NYZMK4GTXBGBLNJPBPB63FFU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene as a non-magnetic spin-current lens","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. T. Costa, F. S. M. Guimar\\~aes, M. S. Ferreira, R. B. Muniz","submitted_at":"2010-09-30T19:42:46Z","abstract_excerpt":"In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to travel omni-directionally. We propose that a curved boundary between a gated and a non-gated region within graphene acts as an ideal lens for spin currents despite being entirely of non-magnetic nature. We show as a proof of concept that such lenses can be utilized to redirect the spin current that trave"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.6228","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":"2026-05-18T02:23:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hhgfZdMVtbkhxoimQL9n21LpigrraAWNfFxeWzJ68rI7ycrtuR3a6N4y8YrUF1EfvQ17Tuwi7XKl3Rz3oqAvCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T16:43:28.701805Z"},"content_sha256":"734a627eac57453cf93cbf0ae0d7968578d7fda9bb42dc4f06f72acb7546192e","schema_version":"1.0","event_id":"sha256:734a627eac57453cf93cbf0ae0d7968578d7fda9bb42dc4f06f72acb7546192e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/bundle.json","state_url":"https://pith.science/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/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":"2026-06-25T16:43:28Z","links":{"resolver":"https://pith.science/pith/K5NYZMK4GTXBGBLNJPBPB63FFU","bundle":"https://pith.science/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/bundle.json","state":"https://pith.science/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K5NYZMK4GTXBGBLNJPBPB63FFU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:K5NYZMK4GTXBGBLNJPBPB63FFU","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":"b5bd578341a5647ea92de2691fe090b7e9931d2be66cd84172995af503aba2c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-30T19:42:46Z","title_canon_sha256":"22230fe6bc695f9fed486c1ca4bc32da37b408497b87a5e1b1cedc707d24e0f6"},"schema_version":"1.0","source":{"id":"1009.6228","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.6228","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"arxiv_version","alias_value":"1009.6228v2","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.6228","created_at":"2026-05-18T02:23:47Z"},{"alias_kind":"pith_short_12","alias_value":"K5NYZMK4GTXB","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"K5NYZMK4GTXBGBLN","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"K5NYZMK4","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:734a627eac57453cf93cbf0ae0d7968578d7fda9bb42dc4f06f72acb7546192e","target":"graph","created_at":"2026-05-18T02:23:47Z","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":"In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to travel omni-directionally. We propose that a curved boundary between a gated and a non-gated region within graphene acts as an ideal lens for spin currents despite being entirely of non-magnetic nature. We show as a proof of concept that such lenses can be utilized to redirect the spin current that trave","authors_text":"A. T. Costa, F. S. M. Guimar\\~aes, M. S. Ferreira, R. B. Muniz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-30T19:42:46Z","title":"Graphene as a non-magnetic spin-current lens"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.6228","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":"sha256:30150cc07cbb29fb376197abce6ca366b3c49f4fcfa7cf19c8287c09a91c5c59","target":"record","created_at":"2026-05-18T02:23:47Z","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":"b5bd578341a5647ea92de2691fe090b7e9931d2be66cd84172995af503aba2c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-30T19:42:46Z","title_canon_sha256":"22230fe6bc695f9fed486c1ca4bc32da37b408497b87a5e1b1cedc707d24e0f6"},"schema_version":"1.0","source":{"id":"1009.6228","kind":"arxiv","version":2}},"canonical_sha256":"575b8cb15c34ee13056d4bc2f0fb652d0b692e1848ba50647ad0e5a13e90f591","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"575b8cb15c34ee13056d4bc2f0fb652d0b692e1848ba50647ad0e5a13e90f591","first_computed_at":"2026-05-18T02:23:47.971863Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:23:47.971863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"szqk0Mdp/YeFDYvRJdaG3yP7coJwQiQwda2F0U0AcHgNt4aYEglplOMWc3IdZeUqR+bkoiG4ithE4olDs4h+Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:23:47.972487Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.6228","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30150cc07cbb29fb376197abce6ca366b3c49f4fcfa7cf19c8287c09a91c5c59","sha256:734a627eac57453cf93cbf0ae0d7968578d7fda9bb42dc4f06f72acb7546192e"],"state_sha256":"14575a3aeb2952bdd256c43d0d88a444e38bea2c2dfee75c5167d80222997b94"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RoSgb2QdKW3W2Z1/NebgdkNcn5+qbSLilZi1Uz2ku3aiJ2G3EF6MdIVjbWUshqLwX7gvKultZZf9pL3S+g5XAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T16:43:28.704592Z","bundle_sha256":"8a819f61e86b518373cdd575c251c697fe05de9c9a0728417a9553b95c47f8c0"}}