{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:O37YXXDGAWMGKXTZ4MSALP77KY","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":"f417674d5d5731c3ebbaff1130eb73cff4846c85be615b941bc502b158e3e215","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-25T22:31:03Z","title_canon_sha256":"514ff18c4cef8fa0c32831b19f15ecc184dd47f7a4cba07481c1204e60517fbe"},"schema_version":"1.0","source":{"id":"1808.08476","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.08476","created_at":"2026-05-17T23:51:14Z"},{"alias_kind":"arxiv_version","alias_value":"1808.08476v1","created_at":"2026-05-17T23:51:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.08476","created_at":"2026-05-17T23:51:14Z"},{"alias_kind":"pith_short_12","alias_value":"O37YXXDGAWMG","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"O37YXXDGAWMGKXTZ","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"O37YXXDG","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:b64e0d0ff3de5a564cfc78f1a4a5f03cb1a1923fe14947fbda35d15a55d214b5","target":"graph","created_at":"2026-05-17T23:51:14Z","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":"GaV$_4$S$_8$ is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and N\\'eel-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy and micro-magnetic simulations to demonstrate the coherent generation of collective spin excitations in the Cyc and SkL phases driven by an optically-induced modulation of uniaxial anisotropy. Our results shed light on spin-dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical control of their magnetic order.","authors_text":"E. Slivina, F. Sekiguchi, I. K\\'ezsm\\'arki, P. H. M. van Loosdrecht, P. Padmanabhan, R. B. Versteeg, S. Bord\\'acs, V. Tsurkan","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-25T22:31:03Z","title":"Optically driven collective spin excitations and magnetization dynamics in the N\\'eel-type skyrmion host GaV$_4$S$_8$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.08476","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:ba47dd56d5307c117c2eff7ba1e07736ce5bb291b9961b54ff3b5cc2878a19de","target":"record","created_at":"2026-05-17T23:51:14Z","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":"f417674d5d5731c3ebbaff1130eb73cff4846c85be615b941bc502b158e3e215","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-25T22:31:03Z","title_canon_sha256":"514ff18c4cef8fa0c32831b19f15ecc184dd47f7a4cba07481c1204e60517fbe"},"schema_version":"1.0","source":{"id":"1808.08476","kind":"arxiv","version":1}},"canonical_sha256":"76ff8bdc660598655e79e32405bfff563fe8428e2403f18b232533e00cba2f66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76ff8bdc660598655e79e32405bfff563fe8428e2403f18b232533e00cba2f66","first_computed_at":"2026-05-17T23:51:14.320556Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:14.320556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rgXlwx44k5Yd+MfOj4600Wg2KQAbMN5pIYog7PAq6pgD7T383VM8g1zFlS1By4kAx/0merc1X7taeM9fHgSGBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:14.321068Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.08476","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba47dd56d5307c117c2eff7ba1e07736ce5bb291b9961b54ff3b5cc2878a19de","sha256:b64e0d0ff3de5a564cfc78f1a4a5f03cb1a1923fe14947fbda35d15a55d214b5"],"state_sha256":"393b61d8fe268e318346f5a7f659ebfbaf7121ca318ece285cdbaf3540013f80"}