Ferromagnetism in transparent thin films of MgO
We show both theoretical and experimental evidences of the appearance of ferromagnetism in MgO thin films. First-principles calculations allow predicting the possibility of the formation of a local moment in MgO, provided the existence of Mg vacancies which create holes on acceptor levels near the O...
| Autores: | ; ; ; ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2010 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/33086 |
| Acceso en línea: | https://hdl.handle.net/2445/33086 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Pel·lícules fines Ferromagnetisme Òxid de magnesi Espintrònica Thin films Ferromagnetism Magnesium oxide Spintronics |
| _version_ | 1878734955576557568 |
|---|---|
| author | Martínez Boubeta, José Carlos |
| author2 | Beltrán, J. I. Balcells i Argemí, Lluís Konstantinović, Zorica Valencia, S. Schmitz, D. Arbiol i Cobos, Jordi Estradé Albiol, Sònia Cornil, J. Martínez Perea, Benjamin |
| author2_role | author author author author author author author author author |
| author_browse | Arbiol i Cobos, Jordi Balcells i Argemí, Lluís Beltrán, J. I. Cornil, J. Estradé Albiol, Sònia Konstantinović, Zorica Martínez Boubeta, José Carlos Martínez Perea, Benjamin Schmitz, D. Valencia, S. |
| author_facet | Martínez Boubeta, José Carlos Beltrán, J. I. Balcells i Argemí, Lluís Konstantinović, Zorica Valencia, S. Schmitz, D. Arbiol i Cobos, Jordi Estradé Albiol, Sònia Cornil, J. Martínez Perea, Benjamin |
| author_role | author |
| collection | Recercat. Dipósit de la Recerca de Catalunya |
| description | We show both theoretical and experimental evidences of the appearance of ferromagnetism in MgO thin films. First-principles calculations allow predicting the possibility of the formation of a local moment in MgO, provided the existence of Mg vacancies which create holes on acceptor levels near the O 2p-dominated valence band. Magnetic measurements evidence of the existence of room-temperature ferromagnetism in MgO thin films. High-resolution transmission electron microscopy demonstrates the existence of cation vacancies in our samples. Finally, by applying the element specificity of the x-ray magnetic circular dichroism technique, we also demonstrate that the magnetic moments of the system arise from the spin polarization of the 2p electrons of oxygen atoms surrounding Mg vacancies. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_7329ae908286cf37dbbedd4c1aa8e3a9 |
| institution | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:recercat.cat:2445/33086 |
| publishDate | 2010 |
| publishDateSort | 2010 |
| publisher | American Physical Society |
| publisherStr | American Physical Society |
| reponame_str | Recercat. Dipósit de la Recerca de Catalunya |
| spelling | Ferromagnetism in transparent thin films of MgO Martínez Boubeta, José Carlos Beltrán, J. I. Balcells i Argemí, Lluís Konstantinović, Zorica Valencia, S. Schmitz, D. Arbiol i Cobos, Jordi Estradé Albiol, Sònia Cornil, J. Martínez Perea, Benjamin Pel·lícules fines Ferromagnetisme Òxid de magnesi Espintrònica Thin films Ferromagnetism Magnesium oxide Spintronics We show both theoretical and experimental evidences of the appearance of ferromagnetism in MgO thin films. First-principles calculations allow predicting the possibility of the formation of a local moment in MgO, provided the existence of Mg vacancies which create holes on acceptor levels near the O 2p-dominated valence band. Magnetic measurements evidence of the existence of room-temperature ferromagnetism in MgO thin films. High-resolution transmission electron microscopy demonstrates the existence of cation vacancies in our samples. Finally, by applying the element specificity of the x-ray magnetic circular dichroism technique, we also demonstrate that the magnetic moments of the system arise from the spin polarization of the 2p electrons of oxygen atoms surrounding Mg vacancies. American Physical Society https://hdl.handle.net/2445/33086 |
| spellingShingle | Ferromagnetism in transparent thin films of MgO Martínez Boubeta, José Carlos Pel·lícules fines Ferromagnetisme Òxid de magnesi Espintrònica Thin films Ferromagnetism Magnesium oxide Spintronics |
| status_str | publishedVersion |
| title | Ferromagnetism in transparent thin films of MgO |
| title_full | Ferromagnetism in transparent thin films of MgO |
| title_fullStr | Ferromagnetism in transparent thin films of MgO |
| title_full_unstemmed | Ferromagnetism in transparent thin films of MgO |
| title_short | Ferromagnetism in transparent thin films of MgO |
| title_sort | Ferromagnetism in transparent thin films of MgO |
| topic | Pel·lícules fines Ferromagnetisme Òxid de magnesi Espintrònica Thin films Ferromagnetism Magnesium oxide Spintronics |
| topic_facet | Pel·lícules fines Ferromagnetisme Òxid de magnesi Espintrònica Thin films Ferromagnetism Magnesium oxide Spintronics |
| url | https://hdl.handle.net/2445/33086 |