{"id":1036,"date":"2021-04-08T10:32:26","date_gmt":"2021-04-08T12:32:26","guid":{"rendered":"https:\/\/sites.ifi.unicamp.br\/odilon\/?p=1036"},"modified":"2021-07-08T10:33:23","modified_gmt":"2021-07-08T12:33:23","slug":"unpolarized-light-sources-from-rolled-up-quantum-wells-destaque-da-sbpmat","status":"publish","type":"post","link":"https:\/\/sites.ifi.unicamp.br\/odilon\/2021\/04\/08\/unpolarized-light-sources-from-rolled-up-quantum-wells-destaque-da-sbpmat\/","title":{"rendered":"Unpolarized light sources from rolled-up quantum wells (Destaque da SBPMat)"},"content":{"rendered":"<p>Our work, in collaboration with Prof. Christoph Deneke (IFGW),&nbsp; \u00c2ngelo Malachias (UFMG), and Leonarde Nascimento (UFV), is one latest highlights of the Brazilian Materials Research Society (SBPMat).&nbsp; To see the press release click <a href=\"https:\/\/www.sbpmat.org.br\/pt\/artigo-em-destaque-engenharia-de-estrutura-de-banda-usando-a-geometria-de-tubos-enrolados\/\">HERE<\/a>.<\/p>\n<p>We demonstrate how the strain state of a rolled-up InGaAs\/GaAs quantum well can be employed to induce strong valence band mixing and produce rolled-up tubes which emit unpolarized light. We show that the rolling-up process induces a strong modification in the optical selection rules of the system which, even under quasi-resonant excitation with the upper valence band states, does not allow us to excite a measurable spin polarization in the&nbsp; conduction band of the system.<\/p>\n<p>The conclusions are reached after a careful collaborative research which involved optical spectroscopy (circularly polarized PL and PLE), X-Ray measurements, and simulations. The article was published in ACS Applied Nano Materials. To read it, click <a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acsanm.1c00354.\">HERE<\/a>.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignright size-full wp-image-1038\" src=\"https:\/\/sites.ifi.unicamp.br\/odilon\/files\/2021\/07\/Foto-SBPMat.jpg\" alt=\"\" width=\"768\" height=\"198\" srcset=\"https:\/\/sites.ifi.unicamp.br\/odilon\/files\/2021\/07\/Foto-SBPMat.jpg 768w, https:\/\/sites.ifi.unicamp.br\/odilon\/files\/2021\/07\/Foto-SBPMat-300x77.jpg 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our work, in collaboration with Prof. Christoph Deneke (IFGW),&nbsp; \u00c2ngelo Malachias (UFMG), and Leonarde Nascimento (UFV), is one latest highlights of the Brazilian Materials Research Society (SBPMat).&nbsp; To see the press release click HERE. We demonstrate how the strain state of a rolled-up InGaAs\/GaAs quantum well can be employed to induce strong valence band mixing &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/sites.ifi.unicamp.br\/odilon\/2021\/04\/08\/unpolarized-light-sources-from-rolled-up-quantum-wells-destaque-da-sbpmat\/\">Continue lendo<\/a><\/p>\n","protected":false},"author":48,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1036","post","type-post","status-publish","format-standard","hentry","category-sem-categoria","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/posts\/1036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/users\/48"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/comments?post=1036"}],"version-history":[{"count":2,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/posts\/1036\/revisions"}],"predecessor-version":[{"id":1039,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/posts\/1036\/revisions\/1039"}],"wp:attachment":[{"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/media?parent=1036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/categories?post=1036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/odilon\/wp-json\/wp\/v2\/tags?post=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}