{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IDJQSYYAMQ2NAVHYIUL643L4XQ","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":"1743b1f51c52f2484028d67a144364e8a6022b0a67bc0fd283eb925c284767a3","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-19T10:51:42Z","title_canon_sha256":"f7c693db1d0b764e62b5aa790a46d72fd6fb357dd7b5efa14eebc6edbc068503"},"schema_version":"1.0","source":{"id":"1210.5372","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.5372","created_at":"2026-05-18T03:14:28Z"},{"alias_kind":"arxiv_version","alias_value":"1210.5372v1","created_at":"2026-05-18T03:14:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.5372","created_at":"2026-05-18T03:14:28Z"},{"alias_kind":"pith_short_12","alias_value":"IDJQSYYAMQ2N","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IDJQSYYAMQ2NAVHY","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IDJQSYYA","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:2bd45dc9462e31ac234ae0dc5a7c06407e002e7ddd2ae406f587fca3bb771042","target":"graph","created_at":"2026-05-18T03:14:28Z","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 spin-based electronics, information is encoded by the spin state of electron bunches. Processing this information requires the controlled transport of spin angular momentum through a solid, preferably at frequencies reaching the so far unexplored terahertz (THz) regime. Here, we demonstrate, by experiment and theory, that the temporal shape of femtosecond spin-current bursts can be manipulated by using specifically designed magnetic heterostructures. A laser pulse is employed to drive spins from a ferromagnetic Fe thin film into a nonmagnetic cap layer that has either low (Ru) or high (Au) ","authors_text":"F. Freimuth, G. Eilers, I. Radu, J. N\\\"otzold, M. Battiato, M. M\\\"unzenberg, M. Wolf, P. Maldonado, P. M. Oppeneer, S. Bl\\\"ugel, T. Kampfrath, Y. Mokrousov","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-19T10:51:42Z","title":"Engineering ultrafast spin currents and terahertz transients by magnetic heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5372","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":"sha256:5db978c4587e65d82137995f8100f88d60f4c2710b900ed8c9ff14c87fb6ed9c","target":"record","created_at":"2026-05-18T03:14:28Z","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":"1743b1f51c52f2484028d67a144364e8a6022b0a67bc0fd283eb925c284767a3","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-19T10:51:42Z","title_canon_sha256":"f7c693db1d0b764e62b5aa790a46d72fd6fb357dd7b5efa14eebc6edbc068503"},"schema_version":"1.0","source":{"id":"1210.5372","kind":"arxiv","version":1}},"canonical_sha256":"40d30963006434d054f84517ee6d7cbc35919c6ae7d0ed0745211106135ce8fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40d30963006434d054f84517ee6d7cbc35919c6ae7d0ed0745211106135ce8fb","first_computed_at":"2026-05-18T03:14:28.114186Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:14:28.114186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5otL2E/DXpNrJBoVjLBqbosNazRaoVkL3b5RQJrY9h28ITqhxGqcCmU3UrnkDPrrvD3V5WkOXctlp0zCA4gWCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:14:28.114616Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.5372","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5db978c4587e65d82137995f8100f88d60f4c2710b900ed8c9ff14c87fb6ed9c","sha256:2bd45dc9462e31ac234ae0dc5a7c06407e002e7ddd2ae406f587fca3bb771042"],"state_sha256":"ee6ddd3d75f765700f947ef9ebb0efe4ea127464469a7c2be4c7715a7fc0de4e"}