Scanning tunneling spectroscopy of Ag films: The effect of periodic versus quasiperiodic modulation

被引：6
|
作者：
Eom, Daejin [1 ]
Jiang, C. -S.
Yu, H. -B.
Shi, J.
Niu, Q.
Ebert, Ph.
Shih, C. -K.
机构：
[1] Univ Texas, Dept Phys, Austin, TX 78712 USA
[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
[3] Chinese Acad Sci, ICQS, Beijing 100080, Peoples R China
[4] Forschungszentrum, Inst Festkorperforsch, D-52425 Julich, Germany
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.97.206102
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By using scanning tunneling spectroscopy to probe a silver thin film that contains both periodic and quasiperiodic modulation, and by using Fourier analysis, we unravel the influences of individual Fourier components of the scattering potential (periodic versus quasiperiodic) on the electronic structure of a one-dimensional quasiperiodically modulated thin Ag film. Along the periodically modulated direction, a Bragg reflection-induced energy gap is observed in k space. On the other hand, the exotic E vs k spectrum with many minigaps was observed along the quasiperiodic direction.
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页数：4
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