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Publication
Physical Review B
Paper
Tip electronic structure in scanning tunneling microscopy
Abstract
In scanning tunneling microscopy one observes the convolution of the geometric and electronic structures of tip and sample. Although the influence of the tip geometry on experimentally observed topographies is well documented, effects due to tip electronic structure have not been identified. We report a dramatic asymmetry between filled and empty states on the tip and compare these observations with theoretical calculations. © 1988 The American Physical Society.