Structural aspects of the threefold surface of icosahedral Al-Pd-Mn

D. Rouxel; T. H. Cai; C. J. Jenks; T. A. Lograsso; A. Ross; P. A. Thiel

doi:10.1016/S0039-6028(00)00513-6

Structural aspects of the threefold surface of icosahedral Al-Pd-Mn

D. Rouxel
, T. H. Cai
, C. J. Jenks
, T. A. Lograsso
, A. Ross
, P. A. Thiel

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

We report the first STM study of a threefold surface of an icosahedral quasicrystal. We find that a rough, cluster-dominated structure evolves into a terrace-step morphology, with increasing temperature. The terraces display a fine structure whose long-range order is consistent with threefold symmetry. The fine structure includes small, deep holes. The steps can be very straight, serving to bound equilateral triangles (or portions thereof). These straight steps can cut directly across meandering step edges, superimposing a triangular 'shadow' upon the other terrace-step landscape. The data suggest that the triangles grow outward from a special type of central point. The triangles may represent the initial stages of facetting.

Original language	English
Pages (from-to)	L521-L527
Journal	Surface Science
Volume	461
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(00)00513-6
State	Published - Aug 1 2000
Externally published	Yes

Funding

This work was supported by the Ames Laboratory, which is operated for the U.S. Department of Energy by Iowa State University under Contract No. W-7405-Eng-82, and by Programme International de Coopération Scientifique (PICS) under Grant No. 545 NSF-CNRS.

Keywords

Alloys
Aluminum
Metallic surfaces
Scanning tunneling microscopy

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10.1016/S0039-6028(00)00513-6

Cite this

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abstract = "We report the first STM study of a threefold surface of an icosahedral quasicrystal. We find that a rough, cluster-dominated structure evolves into a terrace-step morphology, with increasing temperature. The terraces display a fine structure whose long-range order is consistent with threefold symmetry. The fine structure includes small, deep holes. The steps can be very straight, serving to bound equilateral triangles (or portions thereof). These straight steps can cut directly across meandering step edges, superimposing a triangular 'shadow' upon the other terrace-step landscape. The data suggest that the triangles grow outward from a special type of central point. The triangles may represent the initial stages of facetting.",

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AU - Rouxel, D.

AU - Cai, T. H.

AU - Jenks, C. J.

AU - Lograsso, T. A.

AU - Ross, A.

AU - Thiel, P. A.

PY - 2000/8/1

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N2 - We report the first STM study of a threefold surface of an icosahedral quasicrystal. We find that a rough, cluster-dominated structure evolves into a terrace-step morphology, with increasing temperature. The terraces display a fine structure whose long-range order is consistent with threefold symmetry. The fine structure includes small, deep holes. The steps can be very straight, serving to bound equilateral triangles (or portions thereof). These straight steps can cut directly across meandering step edges, superimposing a triangular 'shadow' upon the other terrace-step landscape. The data suggest that the triangles grow outward from a special type of central point. The triangles may represent the initial stages of facetting.

AB - We report the first STM study of a threefold surface of an icosahedral quasicrystal. We find that a rough, cluster-dominated structure evolves into a terrace-step morphology, with increasing temperature. The terraces display a fine structure whose long-range order is consistent with threefold symmetry. The fine structure includes small, deep holes. The steps can be very straight, serving to bound equilateral triangles (or portions thereof). These straight steps can cut directly across meandering step edges, superimposing a triangular 'shadow' upon the other terrace-step landscape. The data suggest that the triangles grow outward from a special type of central point. The triangles may represent the initial stages of facetting.

KW - Alloys

KW - Aluminum

KW - Metallic surfaces

KW - Scanning tunneling microscopy

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VL - 461

SP - L521-L527

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Structural aspects of the threefold surface of icosahedral Al-Pd-Mn

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