Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption.
Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption.
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DOI：
10.1038/srep01210
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发表时间：
2013
影响因子：
4.6
通讯作者：
Gao, Hong-Jun
中科院分区：
文献类型：
--
作者：
Liu, Liwei;Yang, Kai;Jiang, Yuhang;Song, Boqun;Xiao, Wende;Li, Linfei;Zhou, Haitao;Wang, Yeliang;Du, Shixuan;Ouyang, Min;Hofer, Werner A.;Castro Neto, Antonio H.;Gao, Hong-Jun
原子或分子单自旋的可逆控制引起了近藤物理学的极大兴趣，并且在基于自旋的电子学中具有潜在的应用。在这里，我们证明了 Au(111) 基底上的锰酞菁分子的近藤共振已经通过单个氢原子与分子磁芯的附着和分离的稳健途径可逆地关闭和打开。密度泛函理论计算进一步揭示，尽管Mn离子的电子总数在此过程中几乎保持不变，但获得一个氢原子会导致3d轨道内的电荷重新分布，分子自旋态从S = 3/2减少到S = 1，这直接导致近藤共振消失。通过局部电压脉冲或热退火来逆转该过程以解吸氢原子。
The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics. Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on a Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.
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影响因子：
3.7
作者：
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通讯作者：
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