POLARIZATION-DEPENDENT ANGLE-RESOLVED PHOTOEMISSION-STUDY OF A SURFACE-STATE ON GASB(110)

被引：2
|
作者：
ZHANG, XD [1 ]
LECKEY, RCG [1 ]
RILEY, JD [1 ]
FAUL, J [1 ]
LEY, L [1 ]
机构：
[1] UNIV ERLANGEN NURNBERG,INST TECH PHYS,W-8520 ERLANGEN,GERMANY
来源：
PHYSICAL REVIEW B | 1993年 / 48卷 / 08期
关键词：
D O I：
10.1103/PhysRevB.48.5300
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using polarization-dependent, angle-resolved photoemission, a prominent nondispersive structure in the normal emission spectra from GaSb(110) has been identified as being due to transitions from the Sb-derived dangling-bond surface state. The atomic-orbital character of the surface state was confirmed to be mainly p(z)-like, and the dispersion of the surface state along the GAMMABAR XBAR direction in the surface Brillouin zone was observed. Using symmetry selection rules, an accurate determination of GAMMA8v, the valence-band maximum (VBM), was made. The surface state was found to be 150+/-100 meV above the VBM, showing that the surface state is indeed an intrinsic intergap surface state.
引用
收藏
页码：5300 / 5305
页数：6
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