{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:KGNB34NF3ZFNFGEVE4Y5ZKSNLI","short_pith_number":"pith:KGNB34NF","schema_version":"1.0","canonical_sha256":"519a1df1a5de4ad298952731dcaa4d5a009e561f3f227c94599b57a6f86935bc","source":{"kind":"arxiv","id":"2204.06199","version":2},"attestation_state":"computed","paper":{"title":"Realization of broadband index-near-zero modes in nonreciprocal magneto-optical heterostructures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Fengwen Kang, Jie Xu, Lujun Hong, Panpan He, Sanshui Xiao, Yamei Luo, Yun Shen, Yun Zhou","submitted_at":"2022-04-13T06:57:10Z","abstract_excerpt":"Epsilon-near-zero (ENZ) metamaterial with the relative permittivity approaching zero has been a hot research subject in the past decades. The wave in the ENZ region has infinite phase velocity ($v=1/\\sqrt{\\varepsilon\\mu}$), whereas it cannot efficiently travel into the other devices or air due to the impedance mismatch or near-zero group velocity. In this paper, we demonstrate that the tunable index-near-zero (INZ) modes with vanishing wavenumbers ($k=0$) and nonzero group velocities ($v_\\mathrm{g} \\neq 0$) can be achieved in nonreciprocal magneto-optical systems. This kind of INZ modes has be"},"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":"2204.06199","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2022-04-13T06:57:10Z","cross_cats_sorted":[],"title_canon_sha256":"453916f43b6a0cccb96529b2b4f425e77f8d213ea1541a9edfe053a3403f1cb6","abstract_canon_sha256":"f14f4a8df0724acc3ae763f58887500d721a798323c3c6e34c384abcb3f3ae3a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:43:43.338564Z","signature_b64":"eh9KIkadlyh9QYsIy+E+nsf/wxmIG1I81+wFtmxo8XmV3aHq9J9CsaZtO9AdSN1LCsWUqnBBwZnOk2HJxpssDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"519a1df1a5de4ad298952731dcaa4d5a009e561f3f227c94599b57a6f86935bc","last_reissued_at":"2026-07-05T04:43:43.338204Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:43:43.338204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Realization of broadband index-near-zero modes in nonreciprocal magneto-optical heterostructures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Fengwen Kang, Jie Xu, Lujun Hong, Panpan He, Sanshui Xiao, Yamei Luo, Yun Shen, Yun Zhou","submitted_at":"2022-04-13T06:57:10Z","abstract_excerpt":"Epsilon-near-zero (ENZ) metamaterial with the relative permittivity approaching zero has been a hot research subject in the past decades. The wave in the ENZ region has infinite phase velocity ($v=1/\\sqrt{\\varepsilon\\mu}$), whereas it cannot efficiently travel into the other devices or air due to the impedance mismatch or near-zero group velocity. In this paper, we demonstrate that the tunable index-near-zero (INZ) modes with vanishing wavenumbers ($k=0$) and nonzero group velocities ($v_\\mathrm{g} \\neq 0$) can be achieved in nonreciprocal magneto-optical systems. This kind of INZ modes has be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.06199","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.06199/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2204.06199","created_at":"2026-07-05T04:43:43.338261+00:00"},{"alias_kind":"arxiv_version","alias_value":"2204.06199v2","created_at":"2026-07-05T04:43:43.338261+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.06199","created_at":"2026-07-05T04:43:43.338261+00:00"},{"alias_kind":"pith_short_12","alias_value":"KGNB34NF3ZFN","created_at":"2026-07-05T04:43:43.338261+00:00"},{"alias_kind":"pith_short_16","alias_value":"KGNB34NF3ZFNFGEV","created_at":"2026-07-05T04:43:43.338261+00:00"},{"alias_kind":"pith_short_8","alias_value":"KGNB34NF","created_at":"2026-07-05T04:43:43.338261+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/KGNB34NF3ZFNFGEVE4Y5ZKSNLI","json":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI.json","graph_json":"https://pith.science/api/pith-number/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/graph.json","events_json":"https://pith.science/api/pith-number/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/events.json","paper":"https://pith.science/paper/KGNB34NF"},"agent_actions":{"view_html":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI","download_json":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI.json","view_paper":"https://pith.science/paper/KGNB34NF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2204.06199&json=true","fetch_graph":"https://pith.science/api/pith-number/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/graph.json","fetch_events":"https://pith.science/api/pith-number/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/action/storage_attestation","attest_author":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/action/author_attestation","sign_citation":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/action/citation_signature","submit_replication":"https://pith.science/pith/KGNB34NF3ZFNFGEVE4Y5ZKSNLI/action/replication_record"}},"created_at":"2026-07-05T04:43:43.338261+00:00","updated_at":"2026-07-05T04:43:43.338261+00:00"}