{"id":116864,"date":"2018-03-11T10:46:12","date_gmt":"2018-03-11T10:46:12","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/injection-transport-and-manipulation-of-pure-spin-currents-in-metallic-lateral-spin-valves\/"},"modified":"2018-03-11T10:46:12","modified_gmt":"2018-03-11T10:46:12","slug":"injection-transport-and-manipulation-of-pure-spin-currents-in-metallic-lateral-spin-valves","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica-del-estado-solido\/injection-transport-and-manipulation-of-pure-spin-currents-in-metallic-lateral-spin-valves\/","title":{"rendered":"Injection, transport and manipulation of pure spin currents in metallic lateral spin valves"},"content":{"rendered":"

Tesis doctoral de Estitxu Villamor Lomas <\/strong><\/h2>\n

Resumen de la tesis doctoralel trabajo realizado en esta tesis se basa en el uso de v\u00e1lvulas de esp\u00edn laterales (lsv de las siglas en ingl\u00e9s), las cuales consisten de dos electrodos ferromagn\u00e9ticos (fm) conectados por un canal no magn\u00e9tico (nm), para la creaci\u00f3n de corrientes de esp\u00edn puras. Estas corrientes est\u00e1n totalmente desacopladas de la corriente de carga, lo que permite obtener las propiedades de inyecci\u00f3n de esp\u00edn de un sistema fm\/nm, as\u00ed como las propiedades de transporte de esp\u00edn de un material nm, sin efectos espurios.En la primera parte de la tesis, se realiza un estudio de propiedades b\u00e1sicas de inyecci\u00f3n y transporte de esp\u00edn en lsvs de co\/cu y de py\/cu. Para ello, la polarizaci\u00f3n de esp\u00edn del co y del py se obtiene y compara en funci\u00f3n de la temperatura, y la longitud de difusi\u00f3n de esp\u00edn del cu se obtiene en funci\u00f3n de la temperatura y las dimensiones del canal.La segunda parte de la tesis se basa en la manipulaci\u00f3n de corrientes de esp\u00edn. Para ello, en primer lugar el ya conocido efecto hanle es analizado en lsvs con diferentes interfaces fm\/nm. En segundo lugar, se propone una nueva manera de manipulaci\u00f3n de esp\u00edn, basada en la interacci\u00f3n entre el esp\u00edn y la magnetizaci\u00f3n de un substrato fm aislante, la cual se controla aplicando compos magn\u00e9ticos peque\u00f1os. La teor\u00eda que explica dicha manipulaci\u00f3n es desarrollada y posteriormente verificada mediante nuestros experimentos.Abstract of the phd thesisthe work realized throughout this thesis is based on the use of lateral spin valves (lsv), which consist of two ferromagnetic (fm) electrodes, bridged by a non-magnetic (nm) cannel. Thanks to their non-local geometry, they provide a way of creating pure spin currents. The fact that such currents are completely decoupled from the charge, avoiding any spurious effect, makes lsvs an effective for the obtention of spin-injection properties of a fm\/nm system, as well as spin-transport properties of a nm metal. In the first part of the thesis, co\/cu and py\/cu lsvs are used in order to carry out a basic study about spin-injection and spin-transport properties. With that purpose the spin polarization of py and co are obtained and compared as a function of temperature. In addition, the spin-diffusion length of cu is obtained as a function of temperature and of the different dimensions of the cu cannel.The second part of the thesis is based on the manipulation of the pure spin currents. First of all, the already known hanle effect is analized in lsvs with different fm\/nm interface resistances. Furthermore, a novel manner of spin manipulation is proposed, based on the interaction between the spins and the magnetization of a fm insulator (fmi) substrate, which is controlled by applying small magnetic field. We develop a theory for explaining such manipulation, which is proven by our experiments.<\/p>\n

 <\/p>\n

Datos acad\u00e9micos de la tesis doctoral \u00abInjection, transport and manipulation of pure spin currents in metallic lateral spin valves<\/strong>\u00ab<\/h3>\n
    \n
  • T\u00edtulo de la tesis:<\/strong>\u00a0 Injection, transport and manipulation of pure spin currents in metallic lateral spin valves <\/li>\n
  • Autor:<\/strong>\u00a0 Estitxu Villamor Lomas <\/li>\n
  • Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n
  • Fecha de lectura de la tesis:<\/strong>\u00a0 15\/12\/2014<\/li>\n<\/ul>\n

     <\/p>\n

    Direcci\u00f3n y tribunal<\/h3>\n
      \n
    • Director de la tesis<\/strong>\n
        \n
      • F\u00e9lix Casanova Fern\u00e1ndez<\/li>\n<\/ul>\n<\/li>\n
      • Tribunal<\/strong>\n
          \n
        • Presidente del tribunal: fernando Plazaola muguruza <\/li>\n
        • Luis Alberto Morell\u00f3n alqu\u00e9zar (vocal)<\/li>\n
        • andreas Berger (vocal)<\/li>\n
        • laurent Vila — (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          Tesis doctoral de Estitxu Villamor Lomas Resumen de la tesis doctoralel trabajo realizado en esta tesis se basa en el […]<\/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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[1008,12909],"tags":[199353,230543,82444,42591,230544,85776],"class_list":["post-116864","post","type-post","status-publish","format-standard","hentry","category-fisica-del-estado-solido","category-pais-vasco-euskal-herriko-unibertsitatea","tag-andreas-berger","tag-estitxu-villamor-lomas","tag-felix-casanova-fernandez","tag-fernando-plazaola-muguruza","tag-laurent-vila","tag-luis-alberto-morellon-alquezar"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/116864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=116864"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/116864\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=116864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=116864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=116864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}