Surface-state lifetime measured by scanning tunneling spectroscopy

被引：177

作者：

Li, JT ^{[1
]}

Schneider, WD

Berndt, R

Bryant, OR

Crampin, S

机构：

[1] Univ Lausanne, Inst Phys Expt, CH-1015 Lausanne, Switzerland

[2] Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany

[3] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.81.4464

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quasiparticle interactions broaden spectral features at surfaces, which can be measured using the scanning tunneling microscope (STM). We report the first study of lifetime effects on Shockley surface-state electrons using low-temperature STM spectroscopy. Data taken from Ag(lll) are analyzed using detailed tunneling calculations and a simple model. and are found to correspond to a self-energy of Sigma = 4.9 +/- 0.6 meV. This is considerably below values determined by angle-resolved photoemission, but remains higher than theoretical predictions. [S0031-9007(98)07612-1].

引用

页码：4464 / 4467

页数：4

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