INFLUENCE OF BULK STATES ON LATERALLY CONFINED SURFACE-STATE ELECTRONS

被引：54

作者：

CRAMPIN, S ^{[1
]}

BOON, MH ^{[1
]}

INGLESFIELD, JE ^{[1
]}

机构：

[1] CATHOLIC UNIV NIJMEGEN,INST THEORET PHYS,6525 ED NIJMEGEN,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.73.1015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Strong scattering by adatoms positioned with the tip of a scanning tunneling microscope (STM) has recently been used to confine surface state electrons to nanoscale structures. We develop a model for confinement by a circular potential on a metal surface, including substrate band structure effects. Scattering into bulk states provides an important broadening mechanism for partially confined states. Contrary to experiment the level width vanishes as the energy approaches the surface state band edge, indicating an additional dominant broadening mechanism for laterally confined surface state levels seen in the STM.

引用

页码：1015 / 1018

页数：4

共 10 条

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