{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:K3CSKDHRTGX3HYZVPHVOYCWKHK","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":"5c538f4417842f2ebf7224de7dc0a14fefc15a4d523493a3d458e43abbf6aa2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-10T09:04:19Z","title_canon_sha256":"9134d4943a87abb00b090a24d9c5d3c3623a91c34969387d6d1f47e34370e844"},"schema_version":"1.0","source":{"id":"1009.1960","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.1960","created_at":"2026-05-18T04:39:19Z"},{"alias_kind":"arxiv_version","alias_value":"1009.1960v1","created_at":"2026-05-18T04:39:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.1960","created_at":"2026-05-18T04:39:19Z"},{"alias_kind":"pith_short_12","alias_value":"K3CSKDHRTGX3","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"K3CSKDHRTGX3HYZV","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"K3CSKDHR","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:4d38d6b0ac79dea57af27188ce8e08dad128c64c5c1d8eb291227c4d2ac2a60b","target":"graph","created_at":"2026-05-18T04:39:19Z","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":"In this Letter we demonstrate that Permalloy (Py), a widely used Ni/Fe alloy, forms contacts to carbon nanotubes (CNTs) that meet the requirements for the injection and detection of spin-polarized currents in carbon-based spintronic devices. We establish the material quality and magnetization properties of Py strips in the shape of suitable electrical contacts and find a sharp magnetization switching tunable by geometry in the anisotropic magnetoresistance (AMR) of a single strip at cryogenic temperatures. In addition, we show that Py contacts couple strongly to CNTs, comparable to Pd contacts","authors_text":"A. Baumgartner, A. Eichler, C. Schoenenberger, F. Freitag, H. Aurich, J. Trbovic","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-10T09:04:19Z","title":"Permalloy-based carbon nanotube spin-valve"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.1960","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":"sha256:43099e72b81eeb61ec40119e6b376d9253369a5a22aefd658fe50c43a475b10e","target":"record","created_at":"2026-05-18T04:39:19Z","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":"5c538f4417842f2ebf7224de7dc0a14fefc15a4d523493a3d458e43abbf6aa2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-09-10T09:04:19Z","title_canon_sha256":"9134d4943a87abb00b090a24d9c5d3c3623a91c34969387d6d1f47e34370e844"},"schema_version":"1.0","source":{"id":"1009.1960","kind":"arxiv","version":1}},"canonical_sha256":"56c5250cf199afb3e33579eaec0aca3aaa4e69fd23e7f52fc1178dbc904a5999","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56c5250cf199afb3e33579eaec0aca3aaa4e69fd23e7f52fc1178dbc904a5999","first_computed_at":"2026-05-18T04:39:19.297608Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:39:19.297608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qta0dlHCvPsyv+iObOMKx4LXcuDFR/Kut731oJ4IwseRIJcQPhJ1SMjk6sAmbnxoy0rYUKMGitBJ/s1q4w7vCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:39:19.298083Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.1960","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43099e72b81eeb61ec40119e6b376d9253369a5a22aefd658fe50c43a475b10e","sha256:4d38d6b0ac79dea57af27188ce8e08dad128c64c5c1d8eb291227c4d2ac2a60b"],"state_sha256":"ac4b5ba59ea91a39a7c9d957bf9fa7df1270bfaa0509d6aca45cb2b17dc282c1"}