INVESTIGATION OF THE ICOSAHEDRAL QUASI-CRYSTAL AL68PD23MN9 BY LEED AND STM

被引：42

作者：

SCHAUB, TM ^{[1
]}

BURGLER, DE ^{[1
]}

GUNTHERODT, HJ ^{[1
]}

SUCK, JB ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE 9, FRANCE

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1994年 / 96卷 / 01期

关键词：

D O I：

10.1007/BF01313019

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The surface of icosahedral Al68Pd23Mn9 was investigated by Low Energy Electron Diffraction (LEED) and Scanning Tunneling Microscopy (STM). Fivefold symmetric LEED patterns of this three dimensional (3D) quasicrystal were analysed in terms of the Fourier transform of a Fibonacci pentagrid. High resolution STM images of this surface prove the quasicrystalline nature of i-Al68Pd23Mn9 both laterally and vertically. Atomically flat terraces with nm-sized fivefold symmetric objects like fivefold stars and pentagonal holes were observed in real space. A Fibonacci pentagrid connecting the pentagonal holes was found to have line separations, which are within experimental errors identical to those derived from LEED data. The terraces are separated by steps of two incommensurable heights, whose succession forms part of the Fibonacci sequence. Cutting a 6D lattice yields lateral separations and step heights in 3D space, which agree with the experimentally determined values.

引用

页码：93 / 96

页数：4

共 17 条

[1]

AUDIER M, COMMUNICATION

[2] ICOSAHEDRAL CRYSTALS FROM CUTS IN 6-DIMENSIONAL SPACE [J].

BAK, P .

SCRIPTA METALLURGICA, 1986, 20 (09) :1199-1204

[3] ICOSAHEDRAL CRYSTALS - WHERE ARE THE ATOMS [J].

BAK, P .

PHYSICAL REVIEW LETTERS, 1986, 56 (08) :861-864

[4] SCANNING TUNNELING MICROSCOPY OF DECAGONAL AND ICOSAHEDRAL QUASI-CRYSTALS [J].

BECKER, RS ;

KORTAN, AR ;

THIEL, FA ;

CHEN, HS .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (02) :867-873

[5] NEUTRON AND X-RAY SINGLE-CRYSTAL STUDY OF THE ALPDMN ICOSAHEDRAL PHASE [J].

BOUDARD, M ;

DEBOISSIEU, M ;

JANOT, C ;

HEGER, G ;

BEELI, C ;

NISSEN, HU ;

VINCENT, H ;

IBBERSON, R ;

AUDIER, M ;

DUBOIS, JM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1992, 4 (50) :10149-10168

[6] HIGH-RESOLUTION ELECTRON-MICROSCOPY STUDY AND STRUCTURE MODELING OF THE STABLE DECAGONAL AL-CU-CO QUASI-CRYSTAL [J].

CHEN, H ;

BURKOV, SE ;

HE, Y ;

POON, SJ ;

SHIFLET, GJ .

PHYSICAL REVIEW LETTERS, 1990, 65 (01) :72-75

[7] AL-CU-RU - AN ICOSAHEDRAL ALLOY WITHOUT PHASON DISORDER [J].

GURYAN, CA ;

GOLDMAN, AI ;

STEPHENS, PW ;

HIRAGA, K ;

TSAI, AP ;

INOUE, A ;

MASUMOTO, T .

PHYSICAL REVIEW LETTERS, 1989, 62 (20) :2409-2412

[8] COMPUTER-SIMULATION OF FRANK-KASPER-TYPE ICOSAHEDRAL QUASI-CRYSTALS [J].

HAFNER, J ;

KRAJCI, M .

EUROPHYSICS LETTERS, 1990, 13 (04) :335-340

[9] ELECTRONIC-STRUCTURE AND STABILITY OF QUASI-CRYSTALS - QUASI-PERIODIC DISPERSION-RELATIONS AND PSEUDOGAPS [J].

HAFNER, J ;

KRAJCI, M .

PHYSICAL REVIEW LETTERS, 1992, 68 (15) :2321-2324

[10]

HIRAGA K, 1985, SCI REP RES TOHOKU A, V32, P309

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