Dynamical interaction of surface electron-hole pairs with surface defects: Surface spectroscopy monitored by particle emissions.
Dynamical interaction of surface electron-hole pairs with surface defects: Surface spectroscopy monitored by particle emissions.
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表面电子空穴对与表面缺陷的动态相互作用：通过粒子发射监测表面光谱。
DOI：
10.1103/physrevlett.70.2495
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发表时间：
1993
影响因子：
8.6
通讯作者：
Itoh
中科院分区：
文献类型：
--
作者：
Kanasaki;Okano;Ishikawa;Nakai;Itoh
测量了GaAs（110）表面缺陷引起的激光感生Ga0发射的激发谱和光学各向异性。结果表明，当光子能量在1.87和2.55eV范围内增加时，Ga0的发射产额急剧增加，且平行于[110]方向偏振的光子的增强比垂直于[110]方向偏振的光子的增强大得多.结果表明，表面的电子空穴对对在缺陷引发发射或Ga 0
Excitation spectra and optical anisotropy for laser-induced Ga 0 emission initiated by defects on GaAs(110) surfaces have been measured. It is found that the Ga 0 emission yield is enhanced sharply when the photon energy increases across both 1.87 and 2.55 eV and that the enhancement is much larger for photons polarized parallel to the [110] direction than for those polarized perpendicular. The result indicates that electron-hole pairs on the surface are particularly effective in the defect-initiated emission or Ga 0