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LOW ENERGY ELECTRON DIFFRACTION
What can we get From LEED? LEED is the principal technique for the determination of surface structures. It may be used in one of two ways: 1.Qualitatively: where the diffraction pattern is recorded and analysis of the spot positions yields infor on the size, symmetry and rotational alignment of the adsorbate until cell with respect…
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Scanning Tunneling Microscopy/Spectroscopy
Basic Principles The history Types of STM measurements Problems and Solutions P1: Draw an energy-position diagram for a metal surface interfacing the vacuum. Draw in the work function. How is dependent on Eo and EBarr? P2: How big is the factor of change in the tunneling current if you scan over an atom on the…
QING SHI 