Effect of impurities on Tamm-like lanthanide-metal surface states

被引：5
|
作者：
Wegner, D. [1 ]
Bauer, A. [1 ]
Kaindl, G. [1 ]
机构：
[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2007年 / 76卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.76.113410
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of isolated residual-gas adsorbates on the local electronic structure of the Dy(0001) surface were spatially mapped by scanning tunneling microscopy and spectroscopy at 12 K. Less than 15 A away from an adsorbate, a strong reduction of the intensity and a significant increase of the width of the majority component of the surface state due to impurity scattering were observed, with essentially no change of the minority component; this reflects a high lateral localization of the Tamm-like surface state. Furthermore, an adsorbate-induced state was found that behaves metastably.
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页数：4
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