ANGLE-RESOLVED PHOTOEMISSION-STUDY OF THE SURFACE-STATE ON NBC(111)

被引：27

作者：

EDAMOTO, K

ABE, Y

IKEDA, T

ITO, N

MIYAZAKI, E

KATO, H

OTANI, S

机构：

[1] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,OHO,IBARAKI 305,JAPAN

[2] NATL INST RES INORGAN MAT,SAKURA,IBARAKI 305,JAPAN

来源：

SURFACE SCIENCE | 1990年 / 237卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(90)90535-G

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Angle-resolved photoemission spectroscopy utilizing synchrotron radiation has been used to study the surface electronic structure of a NbC0.9(111) single crystal. A strong emission from a surface state is observed just below the Fermi level (EF) which is rapidly quenched by hydrogen adsorption. The dispersion relation of this state is mapped in a surface Brillouin zone along the ΓM and ΓK directions. It is found that the surface state disperses upwards and crosses the Fermi level for both ΓM and ΓK dir dispersion and symmetry of this state are in good agreement with theoretical results for the surface state on TiC(111). The photon energy dependence of the cross section of the surface state is also investigated and some resonance effects are found. © 1990.

引用

页码：241 / 247

页数：7

共 24 条

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