Manipulating the Edge of a Two-Dimensional MgO Nanoisland
Manipulating the Edge of a Two-Dimensional MgO Nanoisland
复制标题
操纵二维氧化镁纳米岛的边缘
DOI:
10.1021/acs.jpcc.9b04906
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发表时间:
2019-07
影响因子:
3.7
通讯作者:
Xiao Xudong
中科院分区:
文献类型:
--
作者:
Xu Chaoqiang;Que Y;e;Zhuang Yuan;Liu Bin;Ma Yaping;Wang Kedong;Xiao Xudong
We investigate the morphology evolution and electronic properties of MgO islands grown on the Ag(001) substrate by the reactive deposition method using low-temperature scanning tunneling microscopy/spectroscopy (LT-STM/STS) and low-energy electron diffraction. By pushing the Mg/O2 ratio to the Mg-rich limit, we observe an edge transformation from the nonpolar to the polar edge, implying a completely different ion arrangement in the edge. We ascribe it to the excess Mg atoms which remain after this surface chemical reaction process. The residual Mg occupying the substitutional sites of the underlying Ag substrate contributes to the further reduction of the surface work function. More intriguingly, STS measurement reveals the abrupt disappearance of the surface state at the edge of polar-edge MgO islands. Our study provides a reliable approach to manipulate the edges of metal–oxide nanostructures.
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影响因子:
--
作者:
M. Sterrer;T. Risse;L. Giordano;M. Heyde;N. Nilius;H. Rust;G. Pacchioni;H. Freund
通讯作者:
M. Sterrer;T. Risse;L. Giordano;M. Heyde;N. Nilius;H. Rust;G. Pacchioni;H. Freund
影响因子:
8.6
作者:
BINNIG, G;FRANK, KH;WILLIAMS, AR
通讯作者:
WILLIAMS, AR
DOI:
10.1002/pssa.2210270126
发表时间:
1975-01-01
期刊:
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
影响因子:
--
作者:
DWEYDARI, AW;MEE, CHB
通讯作者:
MEE, CHB
影响因子:
8.6
作者:
Pal, Jagriti;Smerieri, Marco;Rocca, Mario
通讯作者:
Rocca, Mario
影响因子:
6.7
作者:
J. Wollschläger;J. Viernow;C. Tegenkamp;Dóra Erdős;K. Schroder;H. Pfnür
通讯作者:
J. Wollschläger;J. Viernow;C. Tegenkamp;Dóra Erdős;K. Schroder;H. Pfnür