OPTICAL CONDUCTIVITY OF THE STABLE ICOSAHEDRAL QUASI-CRYSTAL AL63.5CU24.5FE12

被引：92

作者：

HOMES, CC ^{[1
]}

TIMUSK, T ^{[1
]}

WU, X ^{[1
]}

ALTOUNIAN, Z ^{[1
]}

SAHNOUNE, A ^{[1
]}

STROMOLSEN, JO ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT PHYS,MONTREAL H3A 2T8,QUEBEC,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.67.2694

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The optical properties of the stable icosahedral quasicrystal Al63.5Cu24.5Fe12 have been measured from 40 to 25000 cm-1 at 300 K and at 80 K. Unlike metallic glasses with a Drude spectrum with strong elastic scattering by disorder, or semiconductors with a conductivity gap, the optical conductivity of this quasicrystal is distinctive: Starting from the very low dc value it increases linearly with frequency well into the near infrared. A prominent peak in the conductivity is observed at 245 cm-1; its position and strength suggest that it arises from a direct excitation of phonons.

引用

页码：2694 / 2696

页数：3

共 24 条

[1] ELECTRONIC-PROPERTIES OF ICOSAHEDRAL, APPROXIMANT, AND AMORPHOUS PHASES OF AN AL-CU-FE ALLOY
BIGGS, BD
LI, Y
POON, SJ
[J]. PHYSICAL REVIEW B, 1991, 43 (10): : 8747 - 8750
[2] QUASI-CRYSTALS
BOTTGER, H
KASNER, G
[J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1991, 164 (01): : 11 - 38
[3] EFROS AL, 1985, ELECTRON ELECTRON IN
[4] OPTICAL-PROPERTIES OF AL-MN QUASI-CRYSTALLINE PHASES PREPARED BY SOLID-STATE INTERDIFFUSION
FRIGERIO, JM
RIVORY, J
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 117 : 812 - 815
[5] ELECTRONIC-STRUCTURE IN THE AL-MN ALLOY CRYSTALLINE ANALOG OF QUASICRYSTALS
FUJIWARA, T
[J]. PHYSICAL REVIEW B, 1989, 40 (02): : 942 - 946
[6] MAGNETIC-PROPERTIES OF ALCUTM (TM = TRANSITION METAL) QUASICRYSTALS
FUKAMICHI, H
GOTO, T
KOMATSU, H
WAKABAYASHI, H
TSAI, A
INOUE, A
MASUMOTO, T
[J]. JOURNAL DE PHYSIQUE, 1988, 49 (C-8): : 239 - 240
[7] NORMAL VIBRATIONS IN ALUMINUM AND DERIVED THERMODYNAMIC PROPERTIES
GILAT, G
NICKLOW, RM
[J]. PHYSICAL REVIEW, 1966, 143 (02): : 487 - +
[8] HODGSON JN, 1963, PHILOS MAG, V8, P343
[9] Homes C. C., UNPUB
[10] IPATOVA IP, 1970, SOLID STATE COMMUN, V8, P651

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