Endohedral Fullerene Fe@C<sub>28</sub> Adsorbed on Au(111) Surface as a High-Efficiency Spin Filter: A Theoretical Study

We present a theoretical study on the adsorption and spin transport properties of magnetic Fe@C<sub>28</sub> using Ab initio calculations based on spin density functional theory and non-equilibrium Green&#8217;s function techniques. Fe@C<sub>28</sub> tends to adsorb on th...

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Bibliographic Details
Main Authors: Ke Xu, Tie Yang, Yu Feng, Xin Ruan, Zhenyan Liu, Guijie Liang, Xiaotian Wang
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Nanomaterials
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Online Access:https://www.mdpi.com/2079-4991/9/8/1068
Description
Summary:We present a theoretical study on the adsorption and spin transport properties of magnetic Fe@C<sub>28</sub> using Ab initio calculations based on spin density functional theory and non-equilibrium Green&#8217;s function techniques. Fe@C<sub>28</sub> tends to adsorb on the bridge sites in the manner of C&#8722;C bonds, and the spin-resolved transmission spectra of Fe@C<sub>28</sub> molecular junctions exhibit robust transport spin polarization (TSP). Under small bias voltage, the transport properties of Fe@C<sub>28</sub> are mainly determined by the spin-down channel and exhibit a large spin polarization. When compressing the right electrode, the TSP is decreased, but high spin filter efficiency (SFE) is still maintained. These theoretical results indicate that Fe@C<sub>28</sub> with a large magnetic moment has potential applications in molecular spintronics.
ISSN:2079-4991