{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZKFOAJ23FEOA3263JTM6LX2H6M","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":"0741b4aac06ea23d5e2ca36c77993b10d7e8d6021e6dafbeca9de63109de00bc","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-01-17T04:03:25Z","title_canon_sha256":"a325266ebb15e9be8bb2be4d271a77addc0b2750c6c821dff8aab9075af83e23"},"schema_version":"1.0","source":{"id":"1801.05539","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05539","created_at":"2026-05-18T00:25:40Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05539v1","created_at":"2026-05-18T00:25:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05539","created_at":"2026-05-18T00:25:40Z"},{"alias_kind":"pith_short_12","alias_value":"ZKFOAJ23FEOA","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZKFOAJ23FEOA3263","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZKFOAJ23","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:80cd5d2038398f80d4ff44ebe8523221c14ab6720c121265af04c9a7a0283cbc","target":"graph","created_at":"2026-05-18T00:25:40Z","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":"We have studied the magneto-optical spectra of ultrathin magnetic films deposited on Si substrates coated with an oxide layer (SiOx). We find that the Kerr rotation angle and the ellipticity of ~1 nm thick CoFeB thin films, almost transparent to visible light, show a strong dependence on the thickness of the SiOx layer. The Kerr signal from the 1 nm CoFeB thin film can be larger than that of ~100 nm thick CoFeB films for a given SiOx thickness and light wavelength. The enhancement of the Kerr signal occurs when optical interference takes place within the SiOx layer. Interestingly, under such r","authors_text":"Hiroyuki Awano, Masamitsu Hayashi, Satoshi Sumi","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-01-17T04:03:25Z","title":"Interference induced enhancement of magneto-optical Kerr effect in ultrathin magnetic films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05539","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:aa262a8c58482c012dee1d90f54273c746e80f86281fc697923534d6d31f81be","target":"record","created_at":"2026-05-18T00:25:40Z","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":"0741b4aac06ea23d5e2ca36c77993b10d7e8d6021e6dafbeca9de63109de00bc","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-01-17T04:03:25Z","title_canon_sha256":"a325266ebb15e9be8bb2be4d271a77addc0b2750c6c821dff8aab9075af83e23"},"schema_version":"1.0","source":{"id":"1801.05539","kind":"arxiv","version":1}},"canonical_sha256":"ca8ae0275b291c0debdb4cd9e5df47f3292b84decfc54c88c0adf27d57aea483","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca8ae0275b291c0debdb4cd9e5df47f3292b84decfc54c88c0adf27d57aea483","first_computed_at":"2026-05-18T00:25:40.939523Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:40.939523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lTlytP0UNL96XXhVqyCYIGWEub8aDdMOsLfIbDusnVxfL2ZpzexeoIgo16koA7s9p5/nVl6mxqZJFm0hMI0iAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:40.940046Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.05539","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa262a8c58482c012dee1d90f54273c746e80f86281fc697923534d6d31f81be","sha256:80cd5d2038398f80d4ff44ebe8523221c14ab6720c121265af04c9a7a0283cbc"],"state_sha256":"a650eaedbe4ef0e57721f4aead8f99b2c82fa8402dc3a15933553c855f15b434"}