{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YFRBB7VWVQEDTZ5GXMIQKEYX3W","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":"07847dc1f5160c93b873fcb7cac78950826c594de7a3e4fca952b771ef657a3e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-04-25T16:37:56Z","title_canon_sha256":"6435e49a84929fb93410cedf9895e494f018d18c7459fd73f07697d416300df7"},"schema_version":"1.0","source":{"id":"1904.11442","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11442","created_at":"2026-05-17T23:47:44Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11442v1","created_at":"2026-05-17T23:47:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11442","created_at":"2026-05-17T23:47:44Z"},{"alias_kind":"pith_short_12","alias_value":"YFRBB7VWVQED","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YFRBB7VWVQEDTZ5G","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YFRBB7VW","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:48e398770375a8e9213c98d768238b279f301fb7772ac65d0f3d1ee32fbf0d20","target":"graph","created_at":"2026-05-17T23:47:44Z","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":"Phase-change materials (PCMs) can switch between different crystalline states as a function of an external bias, offering a pronounced change of their dielectric function. In order to take full advantage of these features for active photonics and information storage, stand-alone PCMs are not sufficient, since the phase transition requires strong pump fields. Here, we explore hybrid metal-semiconductor core-shell nanoantennas loaded with PCMs, enabling a drastic switch in scattering features as the load changes its phase. Large scattering, beyond the limits of small resonant particles, is achie","authors_text":"Alex Krasnok, Andrea Al\\`u, Sergey Lepeshov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-04-25T16:37:56Z","title":"Nonradiative to Superscattering Switch with Phase-Change Materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11442","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":"sha256:5e2ec3630821a6656c056cae22692b902c092a03df0b4fd4b3a6397a054149c8","target":"record","created_at":"2026-05-17T23:47:44Z","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":"07847dc1f5160c93b873fcb7cac78950826c594de7a3e4fca952b771ef657a3e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-04-25T16:37:56Z","title_canon_sha256":"6435e49a84929fb93410cedf9895e494f018d18c7459fd73f07697d416300df7"},"schema_version":"1.0","source":{"id":"1904.11442","kind":"arxiv","version":1}},"canonical_sha256":"c16210feb6ac0839e7a6bb11051317dd8793de3c47b611ee6b7d3c1290111dae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c16210feb6ac0839e7a6bb11051317dd8793de3c47b611ee6b7d3c1290111dae","first_computed_at":"2026-05-17T23:47:44.847469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:44.847469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"76rXsTxg2de7+TiJ6TT1EeifBIGKZ7HNReSfSaRvPAjMYlMeFVS3WPsE1x5Yhoj/WHaNwpZQXooudNoOJvywCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:44.848016Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.11442","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e2ec3630821a6656c056cae22692b902c092a03df0b4fd4b3a6397a054149c8","sha256:48e398770375a8e9213c98d768238b279f301fb7772ac65d0f3d1ee32fbf0d20"],"state_sha256":"c031538d3e2f0a06175dc78d5f255bf866ac2c9abd2a2f231f7382bd9cb54e62"}