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Induced magnetic moment of Eu(3+) ions in GaN

Magnetic semiconductors with coupled magnetic and electronic properties are of high technological and fundamental importance. Rare-earth elements can be used to introduce magnetic moments associated with the uncompensated spin of 4f-electrons into the semiconductor hosts. The luminescence produced b...

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Autores principales: Kachkanov, V., Wallace, M. J., van der Laan, G., Dhesi, S. S., Cavill, S. A., Fujiwara, Y., O'Donnell, K. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3520026/
https://www.ncbi.nlm.nih.gov/pubmed/23236589
http://dx.doi.org/10.1038/srep00969
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author Kachkanov, V.
Wallace, M. J.
van der Laan, G.
Dhesi, S. S.
Cavill, S. A.
Fujiwara, Y.
O'Donnell, K. P.
author_facet Kachkanov, V.
Wallace, M. J.
van der Laan, G.
Dhesi, S. S.
Cavill, S. A.
Fujiwara, Y.
O'Donnell, K. P.
author_sort Kachkanov, V.
collection PubMed
description Magnetic semiconductors with coupled magnetic and electronic properties are of high technological and fundamental importance. Rare-earth elements can be used to introduce magnetic moments associated with the uncompensated spin of 4f-electrons into the semiconductor hosts. The luminescence produced by rare-earth doped semiconductors also attracts considerable interest due to the possibility of electrical excitation of characteristic sharp emission lines from intra 4f-shell transitions. Recently, electroluminescence of Eu-doped GaN in current-injection mode was demonstrated in p-n junction diode structures grown by organometallic vapour phase epitaxy. Unlike most other trivalent rare-earth ions, Eu(3+) ions possess no magnetic moment in the ground state. Here we report the detection of an induced magnetic moment of Eu(3+) ions in GaN which is associated with the (7)F(2) final state of (5)D(0)→(7)F(2) optical transitions emitting at 622 nm. The prospect of controlling magnetic moments electrically or optically will lead to the development of novel magneto-optic devices.
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spelling pubmed-35200262012-12-12 Induced magnetic moment of Eu(3+) ions in GaN Kachkanov, V. Wallace, M. J. van der Laan, G. Dhesi, S. S. Cavill, S. A. Fujiwara, Y. O'Donnell, K. P. Sci Rep Article Magnetic semiconductors with coupled magnetic and electronic properties are of high technological and fundamental importance. Rare-earth elements can be used to introduce magnetic moments associated with the uncompensated spin of 4f-electrons into the semiconductor hosts. The luminescence produced by rare-earth doped semiconductors also attracts considerable interest due to the possibility of electrical excitation of characteristic sharp emission lines from intra 4f-shell transitions. Recently, electroluminescence of Eu-doped GaN in current-injection mode was demonstrated in p-n junction diode structures grown by organometallic vapour phase epitaxy. Unlike most other trivalent rare-earth ions, Eu(3+) ions possess no magnetic moment in the ground state. Here we report the detection of an induced magnetic moment of Eu(3+) ions in GaN which is associated with the (7)F(2) final state of (5)D(0)→(7)F(2) optical transitions emitting at 622 nm. The prospect of controlling magnetic moments electrically or optically will lead to the development of novel magneto-optic devices. Nature Publishing Group 2012-12-12 /pmc/articles/PMC3520026/ /pubmed/23236589 http://dx.doi.org/10.1038/srep00969 Text en Copyright © 2012, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Kachkanov, V.
Wallace, M. J.
van der Laan, G.
Dhesi, S. S.
Cavill, S. A.
Fujiwara, Y.
O'Donnell, K. P.
Induced magnetic moment of Eu(3+) ions in GaN
title Induced magnetic moment of Eu(3+) ions in GaN
title_full Induced magnetic moment of Eu(3+) ions in GaN
title_fullStr Induced magnetic moment of Eu(3+) ions in GaN
title_full_unstemmed Induced magnetic moment of Eu(3+) ions in GaN
title_short Induced magnetic moment of Eu(3+) ions in GaN
title_sort induced magnetic moment of eu(3+) ions in gan
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3520026/
https://www.ncbi.nlm.nih.gov/pubmed/23236589
http://dx.doi.org/10.1038/srep00969
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