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

被引：33

作者：

EDAMOTO, K

ANAZAWA, T

MOCHIDA, A

ITAKURA, T

MIYAZAKI, E

KATO, H

OTANI, S

机构：

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

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

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.46.4192

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Angle-resolved photoemission spectroscopy utilizing synchrotron radiation has been used to study the electronic structure of a TiC0.96(111) surface. A sharp emission from a surface state is observed at just below the Fermi level (0.20 eV at the GAMMABAR point) which is rapidly quenched by hydrogen adsorption. In addition, a weak emission peak is observed at 0.55 eV, which is also derived from the polar structure of the (111) surface but is insensitive to hydrogen adsorption. The two-dimensional band dispersion of the surface state is not found directly, but off-normal-emission measurements suggest that the state disperses upwards for both the GAMMABAR --> MBAR and GAMMABAR --> KBAR directions above the Fermi level. A resonant enhancement of the surface-state emission is found at hv approximately 45 eV.

引用

页码：4192 / 4197

页数：6

共 16 条

[1] DIRECT ANALYSIS OF THE STRUCTURE, CONCENTRATION, AND CHEMICAL ACTIVITY OF SURFACE ATOMIC VACANCIES BY SPECIALIZED LOW-ENERGY ION-SCATTERING SPECTROSCOPY - TIC (001) [J].