Angle-resolved photoemission extended fine structure

Angle - resolved photoemission extended fine structure. 

J.J. Barton, S.W. Robey, and D.A. Shirley. Theory of Angle Resolved Photoemission Extended Fine Structure. Phys. Rev. fi 34 778 (1986). 

Auger electron appearance potential spectroscopy Auger electron spectroscopy Atomic force microscopy Azimuthal photoelectron diffraction Appearance potential spectroscopy Angle-resolved Auger electron spectroscopy Angle-resolved photoemission extended fine structure... 

APD, ARPEFS Azimuthal PED, angle- Same as PED resolved photoemission extended fine structure Spectroscopy of Emitted X-rays or Photons Same as PED... 

Two rather different techniques that exploit the same underlying phenomenon of coherent interference of elastically scattered low energy electrons are photoelectron diffraction [5] and surface extended X-ray absorption fine structure (SEXAFS) [6,7]. Figure 1.1. shows schematically a comparison of the electron interference paths in LEED and in these two techniques. In both photoelectron diffraction and SEXAFS the source of electrons is not an electron beam from outside the surface, as in LEED, but photoelectrons emitted from a core level of an atom within the adsorbate. In photoelectron diffraction one detects the photoelectrons directly, outside the surface, as a function of direction or photoelectron energy (or both). The detected angle-resolved photoemission signal comprises a coherent sum of the directly emitted component of the outgoing photoelectron wavefield and other components of the same wavefield elastically scattered by atoms (especially in the substrate) close... 

Surface analytical techniques such as Auger electron spectroscopy (27), X-ray photoelectron spectroscopy (28), and secondary-ion mass spectrometry (29) have been used to study LB films. Synchrotron radiation is a particularly powerful probe enabling X-ray near-edge structure and extended X-ray absorption fine structure to be measured. Angle-resolved photoemission studies (30) confirmed the existence of a one-dimensional energy band along the (CH2)jc chain in a fatty acid salt film. 

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