Spectroscopic study of Gd nanostructures quantum confined in Fe corrals.

Spectroscopic study of Gd nanostructures quantum confined in Fe corrals.
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Fe 围栏中量子限制的 Gd 纳米结构的光谱研究

DOI:
10.1038/srep12092
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发表时间:
2015-07-10
期刊:
影响因子:
4.6
通讯作者:
Ding HF
Ding HF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Cao RX;Sun L;Miao BF;Li QL;Zheng C;Wu D;You B;Zhang W;Han P;Bader SD;Zhang WY;Ding HF

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低维纳米结构由于其丰富的物理性质和潜在的应用前景而受到人们的关注。它们的功能的基本因素是它们的电子性质,这可以通过量子限制来修改。本文利用扫描隧道谱研究了Ag(111)表面开放Fe围栏中捕获的Gd原子的电子态。Gd吸附原子被捕获在Fe晶格中后,在费米能级以上出现一个光谱峰,而在空晶格中则出现两个光谱峰。单峰位置接近空Corpus的较高能量峰。这些发现,归因于量子限制的corpine和Gd结构被困在里面,支持紧束缚计算。这展示并提供了对原子在各种直径的开放式corpus中捕获的见解,给出了修改纳米物体性质的另一种方法。
Low dimensional nanostructures have attracted attention due to their rich physical properties and potential applications. The essential factor for their functionality is their electronic properties, which can be modified by quantum confinement. Here the electronic states of Gd atom trapped in open Fe corrals on Ag(111) were studied via scanning tunneling spectroscopy. A single spectroscopic peak above the Fermi level is observed after Gd adatoms are trapped inside Fe corrals, while two peaks appear in empty corrals. The single peak position is close to the higher energy peak of the empty corrals. These findings, attributed to quantum confinement of the corrals and Gd structures trapped inside, are supported by tight-binding calculations. This demonstrates and provides insights into atom trapping in open corrals of various diameters, giving an alternative approach to modify the properties of nano-objects.
DOI: 10.1063/1.92999
发表时间: 1982-01-01
影响因子: 4
作者:
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