{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:53ZL7HPSBFSMHZNSOVNK4RKWDB","short_pith_number":"pith:53ZL7HPS","canonical_record":{"source":{"id":"1012.4528","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-12-21T01:56:10Z","cross_cats_sorted":[],"title_canon_sha256":"ead734d1c78335a35a401f281791801c966d428724d36a9df4b3e16be932114a","abstract_canon_sha256":"e90043b28a96d3b41803c52f8921a263e35b1e956a9bb362e2ae7333e3c4fad1"},"schema_version":"1.0"},"canonical_sha256":"eef2bf9df20964c3e5b2755aae4556184e1a373b779a44cc5887123fa059e9db","source":{"kind":"arxiv","id":"1012.4528","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.4528","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"arxiv_version","alias_value":"1012.4528v2","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.4528","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"pith_short_12","alias_value":"53ZL7HPSBFSM","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"53ZL7HPSBFSMHZNS","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"53ZL7HPS","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:53ZL7HPSBFSMHZNSOVNK4RKWDB","target":"record","payload":{"canonical_record":{"source":{"id":"1012.4528","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-12-21T01:56:10Z","cross_cats_sorted":[],"title_canon_sha256":"ead734d1c78335a35a401f281791801c966d428724d36a9df4b3e16be932114a","abstract_canon_sha256":"e90043b28a96d3b41803c52f8921a263e35b1e956a9bb362e2ae7333e3c4fad1"},"schema_version":"1.0"},"canonical_sha256":"eef2bf9df20964c3e5b2755aae4556184e1a373b779a44cc5887123fa059e9db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:19.627754Z","signature_b64":"iy1QNoh+ejapZksRx5ScA53ZoHAqgKUrKgva49m8rxE4dRqnowFhjK+16bcW6OnRnZU6L1QoGRCLhDGmMnuPAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eef2bf9df20964c3e5b2755aae4556184e1a373b779a44cc5887123fa059e9db","last_reissued_at":"2026-05-18T02:04:19.627034Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:19.627034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.4528","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":"2026-05-18T02:04:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O55kT5kY8KaH9F+tIgMRr8kBx8GOtAw+06+qbg5j+dRlTzHF0QJ09anarnCoWunFw8lEo03kTJsvwp9FQkt7Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T03:31:46.715467Z"},"content_sha256":"054a542f67c77d3a181f2af692e1a39d8a6f7640ce7acee88c600d7a9b954a75","schema_version":"1.0","event_id":"sha256:054a542f67c77d3a181f2af692e1a39d8a6f7640ce7acee88c600d7a9b954a75"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:53ZL7HPSBFSMHZNSOVNK4RKWDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin superconductor in ferromagnetic graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Qing-Feng Sun, X. C. Xie, Yue Yu, Zhao-tan Jiang","submitted_at":"2010-12-21T01:56:10Z","abstract_excerpt":"We show a spin superconductor (SSC) in ferromagnetic graphene as the counterpart to the charge superconductor, in which a spin-polarized electron-hole pair plays the role of the spin $2 (\\hbar/2)$ `Cooper pair' with a neutral charge. We present a BCS-type theory for the SSC. With the `London-type equations' of the super-spin-current density, we show the existence of an electric `Meissner effect' against a spatial varying electric field. We further study a SSC/normal conductor/SSC junction and predict a spin-current Josephson effect."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.4528","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":"2026-05-18T02:04:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0r5/+M4rGdbZn+1fBJ9NM3P3JNCgG7OFS8yDagbxx2rDi6PJV6vmNiuyFFPcph2W6jtNbsDoLMWAHLJrRM7fAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T03:31:46.716035Z"},"content_sha256":"38a864528b2c11f0846db199341c24242332af16d915a5e22a7d39be404ece40","schema_version":"1.0","event_id":"sha256:38a864528b2c11f0846db199341c24242332af16d915a5e22a7d39be404ece40"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/bundle.json","state_url":"https://pith.science/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/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":"2026-06-24T03:31:46Z","links":{"resolver":"https://pith.science/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB","bundle":"https://pith.science/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/bundle.json","state":"https://pith.science/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/53ZL7HPSBFSMHZNSOVNK4RKWDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:53ZL7HPSBFSMHZNSOVNK4RKWDB","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":"e90043b28a96d3b41803c52f8921a263e35b1e956a9bb362e2ae7333e3c4fad1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-12-21T01:56:10Z","title_canon_sha256":"ead734d1c78335a35a401f281791801c966d428724d36a9df4b3e16be932114a"},"schema_version":"1.0","source":{"id":"1012.4528","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.4528","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"arxiv_version","alias_value":"1012.4528v2","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.4528","created_at":"2026-05-18T02:04:19Z"},{"alias_kind":"pith_short_12","alias_value":"53ZL7HPSBFSM","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"53ZL7HPSBFSMHZNS","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"53ZL7HPS","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:38a864528b2c11f0846db199341c24242332af16d915a5e22a7d39be404ece40","target":"graph","created_at":"2026-05-18T02:04:19Z","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":"We show a spin superconductor (SSC) in ferromagnetic graphene as the counterpart to the charge superconductor, in which a spin-polarized electron-hole pair plays the role of the spin $2 (\\hbar/2)$ `Cooper pair' with a neutral charge. We present a BCS-type theory for the SSC. With the `London-type equations' of the super-spin-current density, we show the existence of an electric `Meissner effect' against a spatial varying electric field. We further study a SSC/normal conductor/SSC junction and predict a spin-current Josephson effect.","authors_text":"Qing-Feng Sun, X. C. Xie, Yue Yu, Zhao-tan Jiang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-12-21T01:56:10Z","title":"Spin superconductor in ferromagnetic graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.4528","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":"sha256:054a542f67c77d3a181f2af692e1a39d8a6f7640ce7acee88c600d7a9b954a75","target":"record","created_at":"2026-05-18T02:04:19Z","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":"e90043b28a96d3b41803c52f8921a263e35b1e956a9bb362e2ae7333e3c4fad1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-12-21T01:56:10Z","title_canon_sha256":"ead734d1c78335a35a401f281791801c966d428724d36a9df4b3e16be932114a"},"schema_version":"1.0","source":{"id":"1012.4528","kind":"arxiv","version":2}},"canonical_sha256":"eef2bf9df20964c3e5b2755aae4556184e1a373b779a44cc5887123fa059e9db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eef2bf9df20964c3e5b2755aae4556184e1a373b779a44cc5887123fa059e9db","first_computed_at":"2026-05-18T02:04:19.627034Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:19.627034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iy1QNoh+ejapZksRx5ScA53ZoHAqgKUrKgva49m8rxE4dRqnowFhjK+16bcW6OnRnZU6L1QoGRCLhDGmMnuPAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:19.627754Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.4528","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:054a542f67c77d3a181f2af692e1a39d8a6f7640ce7acee88c600d7a9b954a75","sha256:38a864528b2c11f0846db199341c24242332af16d915a5e22a7d39be404ece40"],"state_sha256":"dcbce2c21764a9f8a2b0cad9b0d9d484126546b307a918116ee716888dad5834"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i7qHYQ4EtVW4hJebhiiE0Cp3Dj1+CPd9Re13j9D4jQVVX8tq06duJY56rynL9x9/SxR95LsBdtM8ojIJZRYQAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T03:31:46.718725Z","bundle_sha256":"8b533a76e4a403cee29d4b6849bc80bbe6c66472adf8e129124ae3e11be7c514"}}