Electronic structure of icosahedral alloys studied by ultrahigh energy resolution photoemission spectroscopy

被引：81
作者：
Stadnik, ZM
Purdie, D
Garnier, M
Baer, Y
Tsai, AP
Inoue, A
Edagawa, K
Takeuchi, S
机构：
[1] UNIV NEUCHATEL,INST PHYS,CH-2000 NEUCHATEL,SWITZERLAND
[2] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN
[3] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.77.1777
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The results of a systematic ultrahigh resolution ultraviolet photoemission study of the electronic structure of stable icosahedral alloys Al64Cu24Fe12, Al65Cu20Fe15, Al70Pd20Mn10, and Al70.5Pd21Re8.5 are presented. It is shown that all icosahedral alloys have a clearly developed Fermi edge and are thus metallic down to the temperature of measurement (14-45 K). A marked decrease of the spectral intensity towards the Fermi level in these alloys is demonstrated to be consistent with the existence of the theoretically predicted pseudogap. With an experimental resolution of 6 meV, no evidence of the theoretically predicted spikiness of the density of states could be observed.
引用
收藏
页码：1777 / 1780
页数：4
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