{"paper":{"title":"Far-field radiation of bulk, edge and corner eigenmodes from a finite 2D Su-Schrieffer-Heeger plasmonic lattice","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Antisymmetric modes in finite 2D SSH plasmonic lattices radiate less and achieve higher Q-factors than symmetric modes because out-of-plane dipoles cancel their far-field contributions.","cross_cats":["physics.optics"],"primary_cat":"cond-mat.mes-hall","authors_text":"\\'Alvaro Buend\\'ia, Jos\\'e Antonio S\\'anchez Gil, Jos\\'e Luis Pura, Vincenzo Giannini","submitted_at":"2025-10-09T10:51:26Z","abstract_excerpt":"Subwavelength arrays of plasmonic nanoparticles allow us to control the behaviour of light at the nanoscale. Here, we develop an eigenmode analysis, employing a coupled electromagnetic dipole formalism, which permits us to isolate the contribution to the far-field radiation of each array mode. Specifically, we calculate the far-field radiation patterns by bulk, edge and corner out-of-plane eigenmodes in a finite 2D Su-Schrieffer-Heeger (SSH) array of plasmonic nanoparticles with out-of-plane dipolar resonances. The breaking of symmetries in multipartite unit cells is exploited to tailor the op"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We prove that the antisymmetric modes are darker and have higher Q-factors than their symmetric counterparts. Also, the out-of-plane nature of the dipolar resonances imposes that all bulk Γ-modes are dark, while corner and edge states need extra in-plane symmetries to cancel the far-field radiation.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The coupled electromagnetic dipole formalism accurately captures the far-field radiation and Q-factors of the collective modes without needing higher-order multipoles or retardation effects beyond the model (implicit in the eigenmode analysis section of the abstract).","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Eigenmode analysis of a finite 2D Su-Schrieffer-Heeger plasmonic nanoparticle array shows that antisymmetric out-of-plane modes are darker with higher Q-factors, all bulk Gamma modes are dark, and radiation from edge/corner states becomes more in-plane concentrated as array size grows.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Antisymmetric modes in finite 2D SSH plasmonic lattices radiate less and achieve higher Q-factors than symmetric modes because out-of-plane dipoles cancel their far-field contributions.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"913eae4f671693ae164c08fdb653a466a5cadf463f1f574f44531ceb17211693"},"source":{"id":"2510.08063","kind":"arxiv","version":2},"verdict":{"id":"6934a4db-b51c-4547-95de-f0410edcc767","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-18T09:00:14.801597Z","strongest_claim":"We prove that the antisymmetric modes are darker and have higher Q-factors than their symmetric counterparts. Also, the out-of-plane nature of the dipolar resonances imposes that all bulk Γ-modes are dark, while corner and edge states need extra in-plane symmetries to cancel the far-field radiation.","one_line_summary":"Eigenmode analysis of a finite 2D Su-Schrieffer-Heeger plasmonic nanoparticle array shows that antisymmetric out-of-plane modes are darker with higher Q-factors, all bulk Gamma modes are dark, and radiation from edge/corner states becomes more in-plane concentrated as array size grows.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The coupled electromagnetic dipole formalism accurately captures the far-field radiation and Q-factors of the collective modes without needing higher-order multipoles or retardation effects beyond the model (implicit in the eigenmode analysis section of the abstract).","pith_extraction_headline":"Antisymmetric modes in finite 2D SSH plasmonic lattices radiate less and achieve higher Q-factors than symmetric modes because out-of-plane dipoles cancel their far-field contributions."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2510.08063/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":2,"snapshot_sha256":"f7cc6764c0ab51a24f64bf782fc2243e764c1f090a84ff29c86c5c4f3d24b110"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}