{"id":129097,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/el-efecto-hall-cuantico-y-las-oscilaciones-shubnikov-de-haas-en-el-gas-de-electrones-bidimensional\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"el-efecto-hall-cuantico-y-las-oscilaciones-shubnikov-de-haas-en-el-gas-de-electrones-bidimensional","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/el-efecto-hall-cuantico-y-las-oscilaciones-shubnikov-de-haas-en-el-gas-de-electrones-bidimensional\/","title":{"rendered":"El efecto hall cuantico y las oscilaciones shubnikov-de haas en el gas de electrones bidimensional."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Antonio Urbina Yeregui <\/strong><\/h2>\n<p>Se ha medido experimentalmente el efecto hall cuantico y las oscilaciones shubnikov-de-haas en heteroestructuras de semiconductores. La medida se realiza a altos campos magneticos (hasta 12t) y bajas temperaturas (desde 1.2k) utilizando la tecnica de las cuatro puntas. Las muestras son heteroestructuras pseudomorficas en las que el canal es un pozo cuantico de               . Se han medido muestras con diferentes tipos de dopaje y anchura del pozo, provistas de puerta y con forma de barra hall.  se miden las componentes diagonal     y no-diagonal del tensor de magnetoresistencia transversa (el campo magnetico aplicado es perpendicular al gas de electrones bidimensional y a la corriente aplicada). Se obtienen los plateaus del efecto hall cuantico entero para la componente       y las oscilaciones shubnikov-de haas para la     . A partir de estos resultados se obtiene el ensor de la magnetoconductividad transversa y la densidad de estados del gas de electrones bidimensional en presencia de campo magnetico.  se ha desarrollado un modelo teorico que ajusta los resultados experimentales obtenidos, obteniendose niveles de landau gaussianos para la densidad de estados. La dependencia de la anchura de los niveles respecto el campo magnetico resulta ser         , para cada caso se obtiene un tiempo de relajacion por ajuste con los resultados experimentales.  tambien se ha estudiado la dependencia con la temperatura de la magnetoresistencia transversa, asi como el llenado de la segunda subbanda.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>El efecto hall cuantico y las oscilaciones shubnikov-de haas en el gas de electrones bidimensional.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 El efecto hall cuantico y las oscilaciones shubnikov-de haas en el gas de electrones bidimensional. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Antonio Urbina Yeregui <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Francisco Batallan Casas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan Rojo Alaminos <\/li>\n<li>Sebasti\u00e1n Vieira D\u00edaz (vocal)<\/li>\n<li> Sacedon Adelantado Jos\u00e9 Luis (vocal)<\/li>\n<li>Miguel Ortu\u00f1o Ortin (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Antonio Urbina Yeregui Se ha medido experimentalmente el efecto hall cuantico y las oscilaciones shubnikov-de-haas en heteroestructuras [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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