Growth of Ag on Pb Island with Si(111) Substrate

被引：1

作者：

Hu, Xiao-Peng ^{[1
,2
,3
,4
]}

Zhu, Rui ^{[1
,2
,4
]}

Xu, Jun ^{[1
,2
,4
]}

Ji, Shuai-Hua ^{[3
,4
]}

Chen, Xi ^{[3
,4
]}

Xue, Qi-Kun ^{[3
,4
]}

Yu, Da-Peng ^{[1
,2
,4
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

[3] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

[4] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2016年 / 33卷 / 07期

基金：

中国国家自然科学基金;

关键词：

IMMISCIBLE METALS; SURFACE; PB(111); FILMS;

D O I：

10.1088/0256-307X/33/7/078101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the growth of Ag on Pb island surface with low temperature scanning tunnelling microscopy. Two growth modes, the subsurface island mode and the surface alloy mode, are observed on the substrate at room temperature and at 100 K, respectively. In the surface alloy mode, the perfect alloy AgPb2 is formed on the Pb island surface after annealing. The two growth modes at different substrate temperatures are attributed to the existence of an exchange barrier of Ag atoms on the Pb island surface. The modulation of the exchange barrier by the quantum well states is also observed on the Pb island.

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页数：4

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