Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities

Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities

Spin transport properties of magnetic nanowire systems—atomic-sized AlN nanowires with additional Mn impurities—are investigated employing ab initio constrained spin density functional theory calculations and nonequilibrium Green’s functions formalism. The analyzed nanowire structures exhibit a stre...

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Main Author: G. A. Nemnes
Format: Article
Language:English
Published: Hindawi Limited 2013-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2013/408475
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spelling doaj-811c41aa515245e788041b8c4bf9a2522020-11-24T21:06:44ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292013-01-01201310.1155/2013/408475408475Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn ImpuritiesG. A. Nemnes0Faculty of Physics, “Materials and Devices for Electronics and Optoelectronics” Research Center, University of Bucharest, P.O. Box MG-11, Ilfov 077125 Magurele, RomaniaSpin transport properties of magnetic nanowire systems—atomic-sized AlN nanowires with additional Mn impurities—are investigated employing ab initio constrained spin density functional theory calculations and nonequilibrium Green’s functions formalism. The analyzed nanowire structures exhibit a stress-induced phase transition, between würtzite and graphite-like configurations. In these quasi-one dimensional systems, the surface states ensure the basic prerequisite in establishing spin and charge transfer, by reducing the relatively large bandgap of the group III nitride semiconductor. The results show in how far this phase transition affects the surface states, focusing on the consequences which appear in the spin-filtering processes.http://dx.doi.org/10.1155/2013/408475
collection DOAJ
language English
format Article
sources DOAJ
author G. A. Nemnes
spellingShingle G. A. Nemnes
Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
Journal of Nanomaterials
author_facet G. A. Nemnes
author_sort G. A. Nemnes
title Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
title_short Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
title_full Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
title_fullStr Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
title_full_unstemmed Spin-Filtering Effects in Würtzite and Graphite-Like AlN Nanowires with Mn Impurities
title_sort spin-filtering effects in würtzite and graphite-like aln nanowires with mn impurities
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2013-01-01
description Spin transport properties of magnetic nanowire systems—atomic-sized AlN nanowires with additional Mn impurities—are investigated employing ab initio constrained spin density functional theory calculations and nonequilibrium Green’s functions formalism. The analyzed nanowire structures exhibit a stress-induced phase transition, between würtzite and graphite-like configurations. In these quasi-one dimensional systems, the surface states ensure the basic prerequisite in establishing spin and charge transfer, by reducing the relatively large bandgap of the group III nitride semiconductor. The results show in how far this phase transition affects the surface states, focusing on the consequences which appear in the spin-filtering processes.
url http://dx.doi.org/10.1155/2013/408475
work_keys_str_mv AT ganemnes spinfilteringeffectsinwurtziteandgraphitelikealnnanowireswithmnimpurities
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