{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:GCT35R7SUWHFHWRPDG7SJPSNFG","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":"2e79f026a8a20d6e0ba798202812e7dab4a6de1c5f354157e8d845df1876c46c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-25T18:59:23Z","title_canon_sha256":"db37285d4b7b5b192ac73084117ad30f5efc769a6d6ac78604878b3acad601c9"},"schema_version":"1.0","source":{"id":"2404.16976","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.16976","created_at":"2026-07-05T08:57:02Z"},{"alias_kind":"arxiv_version","alias_value":"2404.16976v1","created_at":"2026-07-05T08:57:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.16976","created_at":"2026-07-05T08:57:02Z"},{"alias_kind":"pith_short_12","alias_value":"GCT35R7SUWHF","created_at":"2026-07-05T08:57:02Z"},{"alias_kind":"pith_short_16","alias_value":"GCT35R7SUWHFHWRP","created_at":"2026-07-05T08:57:02Z"},{"alias_kind":"pith_short_8","alias_value":"GCT35R7S","created_at":"2026-07-05T08:57:02Z"}],"graph_snapshots":[{"event_id":"sha256:9c1d8edf531bf8d8f6e414ecec27638fc337c313b1d4a48bf698a55aa58cfbec","target":"graph","created_at":"2026-07-05T08:57:02Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2404.16976/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spintronic terahertz emitters (STEs) are powerful sources of ultra-broadband single-cycle terahertz (THz) field transients. They work with any pump wavelength, and their polarity and polarization direction are easily adjustable. However, at high pump powers and high repetition rates, STE operation is hampered by a significant increase in the local temperature. Here, we resolve this issue by rotating the STE at a few 100 Hz, thereby distributing the absorbed pump power over a larger area. Our approach permits stable STE operation at a fluence of ~1 mJ/cm$^2$ with up to 18 W pump power at megahe","authors_text":"Alkisti Vaitsi, Fabian Schulz, Luis E. Parra L\\'opez, Martin Wolf, Melanie M\\\"uller, Natalia Mart\\'in Saban\\'es, Tobias Kampfrath, Tom S. Seifert, Vivien Sleziona, Yannic Behovits","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-25T18:59:23Z","title":"Rotating spintronic terahertz emitter optimized for microjoule pump-pulse energies and megahertz repetition rates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.16976","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":"sha256:7786336d6950c737213239a9a7595ddcc40e44bb7c6c3dfc28714f55f9568f66","target":"record","created_at":"2026-07-05T08:57:02Z","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":"2e79f026a8a20d6e0ba798202812e7dab4a6de1c5f354157e8d845df1876c46c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-25T18:59:23Z","title_canon_sha256":"db37285d4b7b5b192ac73084117ad30f5efc769a6d6ac78604878b3acad601c9"},"schema_version":"1.0","source":{"id":"2404.16976","kind":"arxiv","version":1}},"canonical_sha256":"30a7bec7f2a58e53da2f19bf24be4d29903645265e772d467c556da31105eb1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30a7bec7f2a58e53da2f19bf24be4d29903645265e772d467c556da31105eb1e","first_computed_at":"2026-07-05T08:57:02.626488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:57:02.626488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q0yvTMrTc9ewqV+qI9k0BOI11RwPXTuN9UBGtg9wdIOIYDkCo5/CznK2xO7s0T78CpS53jb8PSGrR7VMzzytAg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:57:02.627031Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.16976","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7786336d6950c737213239a9a7595ddcc40e44bb7c6c3dfc28714f55f9568f66","sha256:9c1d8edf531bf8d8f6e414ecec27638fc337c313b1d4a48bf698a55aa58cfbec"],"state_sha256":"6ab45a0b59640ccdbaf61e5fb6121a6ae4d871e7c00ae2842b63d6e83bc3f28c"}