{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:UOQTO4MZY3ZDZZXWSJBKSTF2AI","short_pith_number":"pith:UOQTO4MZ","schema_version":"1.0","canonical_sha256":"a3a1377199c6f23ce6f69242a94cba0222438ade1a063008db7d019583c2b6a5","source":{"kind":"arxiv","id":"1711.01234","version":2},"attestation_state":"computed","paper":{"title":"THz-driven demagnetization with Perpendicular Magnetic Anisotropy: Towards ultrafast ballistic switching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Debanjan Polley, Matteo Pancaldi, Matthias Hudl, Paolo Vavassori, Sergei Urazhdin, Stefano Bonetti","submitted_at":"2017-11-03T16:46:34Z","abstract_excerpt":"We study THz-driven spin dynamics in thin CoPt films with perpendicular magnetic anisotropy. Femtosecond magneto-optical Kerr effect measurements show that demagnetization amplitude of about $1\\%$ can be achieved with a peak THz electric field of $300$~kV/cm, and a corresponding peak magnetic field of $0.1$~T. The effect is more than an order of magnitude larger than observed in samples with easy-plane anisotropy irradiated with the same field strength. We also utilize finite-element simulations to design a meta-material structure that can enhance the THz magnetic field by more than an order o"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1711.01234","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-03T16:46:34Z","cross_cats_sorted":[],"title_canon_sha256":"8c26b107868acb4628c028b75da0162832928639cf29d265cc2c5f219051b3f1","abstract_canon_sha256":"7f7cec38031473ec6f5ef4beb78b3ac8cee3e2c4bee73de1be303b48d3a27afe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:21.780182Z","signature_b64":"SxAYbgu3kwSbAFpXcPgbfpDiVUG+eWKXRT+PH8tVKb2Y00UStuE57XS37duP1GDcOlPyntenkOa6tpX8JyxvBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3a1377199c6f23ce6f69242a94cba0222438ade1a063008db7d019583c2b6a5","last_reissued_at":"2026-05-18T00:21:21.778220Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:21.778220Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"THz-driven demagnetization with Perpendicular Magnetic Anisotropy: Towards ultrafast ballistic switching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Debanjan Polley, Matteo Pancaldi, Matthias Hudl, Paolo Vavassori, Sergei Urazhdin, Stefano Bonetti","submitted_at":"2017-11-03T16:46:34Z","abstract_excerpt":"We study THz-driven spin dynamics in thin CoPt films with perpendicular magnetic anisotropy. Femtosecond magneto-optical Kerr effect measurements show that demagnetization amplitude of about $1\\%$ can be achieved with a peak THz electric field of $300$~kV/cm, and a corresponding peak magnetic field of $0.1$~T. The effect is more than an order of magnitude larger than observed in samples with easy-plane anisotropy irradiated with the same field strength. We also utilize finite-element simulations to design a meta-material structure that can enhance the THz magnetic field by more than an order o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01234","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1711.01234","created_at":"2026-05-18T00:21:21.779486+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.01234v2","created_at":"2026-05-18T00:21:21.779486+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01234","created_at":"2026-05-18T00:21:21.779486+00:00"},{"alias_kind":"pith_short_12","alias_value":"UOQTO4MZY3ZD","created_at":"2026-05-18T12:31:46.661854+00:00"},{"alias_kind":"pith_short_16","alias_value":"UOQTO4MZY3ZDZZXW","created_at":"2026-05-18T12:31:46.661854+00:00"},{"alias_kind":"pith_short_8","alias_value":"UOQTO4MZ","created_at":"2026-05-18T12:31:46.661854+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI","json":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI.json","graph_json":"https://pith.science/api/pith-number/UOQTO4MZY3ZDZZXWSJBKSTF2AI/graph.json","events_json":"https://pith.science/api/pith-number/UOQTO4MZY3ZDZZXWSJBKSTF2AI/events.json","paper":"https://pith.science/paper/UOQTO4MZ"},"agent_actions":{"view_html":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI","download_json":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI.json","view_paper":"https://pith.science/paper/UOQTO4MZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.01234&json=true","fetch_graph":"https://pith.science/api/pith-number/UOQTO4MZY3ZDZZXWSJBKSTF2AI/graph.json","fetch_events":"https://pith.science/api/pith-number/UOQTO4MZY3ZDZZXWSJBKSTF2AI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI/action/storage_attestation","attest_author":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI/action/author_attestation","sign_citation":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI/action/citation_signature","submit_replication":"https://pith.science/pith/UOQTO4MZY3ZDZZXWSJBKSTF2AI/action/replication_record"}},"created_at":"2026-05-18T00:21:21.779486+00:00","updated_at":"2026-05-18T00:21:21.779486+00:00"}