{"id":4757,"date":"2017-01-01T00:00:00","date_gmt":"2017-01-01T08:00:00","guid":{"rendered":"https:\/\/wpdev.hmc.edu\/physics\/2017\/01\/01\/quasiparticles-and-charge-transfer-at-the-two-surfaces-of-the-honeycomb-iridate-mathrmna_2-iro_3\/"},"modified":"2025-12-19T09:04:20","modified_gmt":"2025-12-19T17:04:20","slug":"quasiparticles-and-charge-transfer-at-the-two-surfaces-of-the-honeycomb-iridate-mathrmna_2-iro_3","status":"publish","type":"physics_publications","link":"https:\/\/www.hmc.edu\/physics\/research\/publications\/quasiparticles-and-charge-transfer-at-the-two-surfaces-of-the-honeycomb-iridate-mathrmna_2-iro_3\/","title":{"rendered":"Quasiparticles and Charge Transfer At the Two Surfaces of the Honeycomb Iridate \\( \\mathrm{Na_2 IrO_3} \\)"},"content":{"rendered":"\n<p id=\"authors\">L. Moreschini, I. Lo Vecchio, <span class=\"facauthor\">Nicholas P. Breznay<\/span>*, S. Moser, S. Ulstrup, R. Koch, J. Wirjo, C. Jozwiak, K. S. Kim, E. Rotenberg, A. Bostwick, J. G. Analytis, and A. Lanzara<\/p>\n\n\n\n<p id=\"doc-link\"><a href=\"https:\/\/www.hmc.edu\/physics\/wp-content\/uploads\/sites\/22\/2023\/02\/pub-131.pdf\">Quasiparticles and Charge Transfer At the Two Surfaces of the Honeycomb Iridate \\( \\mathrm{Na_2 IrO_3} \\) (PDF)<\/a><\/p>\n\n\n\n<p id=\"journal\"><span class=\"journal-title\">Physical Review B<\/span> <strong data-vol=\"96\">96<\/strong> <span id=\"journal-year\">(2017)<\/span> <span id=\"journal-pages\" data-pages=\"161116\">161116<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p>Direct experimental investigations of the low-energy electronic structure of the \\( \\mathrm{Na_2 IrO_3} \\) iridate insulator are sparse and draw two conflicting pictures. One relies on flat bands and a clear gap, the other involves dispersive states approaching the Fermi level, pointing to surface metallicity. Here, by a combination of angle-resolved photoemission, photoemission electron microscopy, and x-ray absorption, we show that the correct picture is more complex and involves an anomalous band, arising from charge transfer from Na atoms to Ir-derived states. Bulk quasiparticles do exist, but in one of the two possible surface terminations the charge transfer is smaller and they remain elusive.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L. Moreschini, I. Lo Vecchio, Nicholas P. Breznay*, S. Moser, S. Ulstrup, R. Koch, J. Wirjo, C. Jozwiak, K. S. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","publication_author":[12],"class_list":["post-4757","physics_publications","type-physics_publications","status-publish","hentry","publication_author-breznay"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications\/4757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications"}],"about":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/types\/physics_publications"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/media?parent=4757"}],"wp:term":[{"taxonomy":"publication_author","embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/publication_author?post=4757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}