Influence of impurities on localized transition metal surface states: Scanning tunneling spectroscopy on V(001)

被引：26

作者：

Bischoff, MMJ ^{[1
]}

Konvicka, C

Quinn, AJ

Schmid, M

Redinger, J

Podloucky, R

Varga, P

van Kempen, H

机构：

[1] Catholic Univ Nijmegen, Mat Res Inst, NL-6525 ED Nijmegen, Netherlands

[2] Vienna Tech Univ, Inst Allgemeine Phys, A-1040 Vienna, Austria

[3] Vienna Tech Univ, Inst Tech Elektrochem, A-1060 Vienna, Austria

[4] Vienna Tech Univ, Ctr Computat Mat Sci, A-1060 Vienna, Austria

[5] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria

[6] Univ Vienna, Ctr Computat Mat Sci, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.86.2396

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first scanning tunneling spectroscopy measurements on V(001) are reported. A strong surface stare is detected which is very sensitive to the presence of segregated carbon impurities. The surface state energy shifts from 0.03 eV below the Fermi level at dean areas towards higher energies (up to similar to0.2 eV) at contaminated areas. Because of the negative dispersion of this state, the upward shift cannot be described in a simple confinement picture. Rather, the surface state energy is governed by vanadium surface s-d interactions which are altered by carbon coverage.

引用

页码：2396 / 2399

页数：4

共 20 条

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