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In particular, materials with near-zero permittivity offer a unique opportunity for light localization, as they enable the formation of embedded eigenstates in core-shell systems with suppressed radiation loss. For all the solutions presented thus far in the literature, the exact suppression of the radiation leakage can occur only when the size of the resonator is delicately tuned. Surprisingly, here, it is shown that the tuning of the resonator radius may be unnecessary, and nonlocal metal spherical nanospheres of any size may support multiple embedded eigenstates with monopole-type symmetry.<\/jats:p>","DOI":"10.1063\/5.0077123","type":"journal-article","created":{"date-parts":[[2021,12,30]],"date-time":"2021-12-30T11:52:58Z","timestamp":1640865178000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["Monopole embedded eigenstates in nonlocal plasmonic nanospheres"],"prefix":"10.1063","volume":"119","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7073-0987","authenticated-orcid":false,"given":"Filipa R.","family":"Prud\u00eancio","sequence":"first","affiliation":[{"name":"University of Lisbon\u2014Instituto Superior T\u00e9cnico and Instituto de Telecomunica\u00e7\u00f5es 1 , Avenida Rovisco Pais 1, 1049-001 Lisbon, Portugal"},{"name":"Instituto Universit\u00e1rio de Lisboa (ISCTE-IUL) 2 , Avenida das For\u00e7as Armadas 376, 1600-077 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3730-1689","authenticated-orcid":false,"given":"M\u00e1rio G.","family":"Silveirinha","sequence":"additional","affiliation":[{"name":"University of Lisbon\u2014Instituto Superior T\u00e9cnico and Instituto de Telecomunica\u00e7\u00f5es 1 , Avenida Rovisco Pais 1, 1049-001 Lisbon, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2021,12,30]]},"reference":[{"key":"2023080607315651700_c1","doi-asserted-by":"publisher","first-page":"183902","DOI":"10.1103\/PhysRevLett.100.183902","article-title":"Bound states in the continuum in photonics","volume":"100","year":"2008","journal-title":"Phys. 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