Structure of the twofold surface of the icosahedral Ag-In-Yb quasicrystal

被引：16

作者：

Cui, C. ^{[1
,2
]}

Nugent, P. J. ^{[3
,4
]}

Shimoda, M. ^{[5
]}

Ledieu, J. ^{[6
]}

Fournee, V. ^{[6
]}

Tsai, A. P. ^{[1
,5
]}

McGrath, R. ^{[3
,4
]}

Sharma, H. R. ^{[3
,4
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] Zhejiang Sci Tech Univ, Dept Phys, Hangzhou 310018, Zhejiang, Peoples R China

[3] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England

[4] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[5] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[6] Univ Lorraine, UMR CNRS 7198, Inst Jean Lamour, F-54011 Nancy, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2014年 / 26卷 / 01期

基金：

中国国家自然科学基金; 英国工程与自然科学研究理事会;

关键词：

AL-PD-MN; GROWTH; ENERGY; CA;

D O I：

10.1088/0953-8984/26/1/015001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The structure of the twofold surface of the icosahedral (i-)Ag-In-Yb quasicrystal has been investigated using low energy electron diffraction (LEED) and scanning tunneling microscopy (STM). The LEED confirms that the surface exhibits quasicrystalline long range order with the twofold rotational symmetry expected from the bulk. STM images reveal a step-terrace structure with terrace size comparable to that of the other high symmetry surfaces of the same quasicrystal. The distribution of step heights and high resolution STM images of terraces suggest that the surface terminates at bulk planes that intersect the center of rhombic triacontahedral clusters, the building blocks of the system, as in the case of the threefold and fivefold surfaces of the system. These planes are rich in Yb and In. No facets are observed on the surface, suggesting that the twofold surface is as stable as the other high symmetry surfaces.

引用

页数：6

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