STM Study on the (100) Surface of the Ag-In-Yb 1/1 Cubic Approximant

• Authors: C. Cui , H. Sharma , P. Nugent , M. Shimoda , An Pang Tsai
• Languages of publication: EN

Abstracts

EN

Scanning tunneling microscopy studies have revealed a periodic step-terrace structure in the (100) surface of the Ag-In-Yb 1/1 cubic approximant. The step height between the large terraces is about 0.73 nm, approximately one-half of the lattice constant, which is consistent with the bcc-like crystalline structure of this crystal. Two small terraces are observed between the adjacent large terraces. High-resolution STM images of the large terrace exhibit a square lattice of protrusions with a lattice constant of about 1.55 nm, which is consistent with the bulk lattice constant. The scanning tunneling microscopy results suggest that the large terraces are associated with the planes that intersect the centers of rhombic triacontrahedral clusters (the building unit of the crystal) and show the highest atomic density along the [100] axis. It is highly likely that the small terraces are related to moderate atomic density planes and are less stable than the large terraces.

Keywords

EN

61.44.Br; 68.35.B-; 68.37.Ef

Discipline

• 68.35.B-: Structure of clean surfaces (and surface reconstruction)
• 68.37.Ef: Scanning tunneling microscopy (including chemistry induced with STM)
• 61.44.Br: Quasicrystals

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 2
• Pages: 577-580

Dates

published

2014-08

Contributors

author

C. Cui

• Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China
• Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

author

H. Sharma

• Surface Science Research Centre and Department of Physics, The University of Liverpool, Liverpool L69 3BX, UK

author

P. Nugent

• Surface Science Research Centre and Department of Physics, The University of Liverpool, Liverpool L69 3BX, UK

author

M. Shimoda

• National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

author

An Pang Tsai

• Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
• National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

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Identifiers

DOI

10.12693/APhysPolA.126.577