Modeling Green's function measurements with two-tip scanning tunneling microscopy

  title={Modeling Green's function measurements with two-tip scanning tunneling microscopy},
  author={Maarten Leeuwenhoek and Simon Gr{\"o}blacher and Milan P Allan and Ya. M. Blanter},
  journal={Physical Review B},
A double-tip scanning tunneling microscope with nanometer-scale tip separation has the ability to access the single-electron Green's function in real and momentum spaces based on second-order tunneling processes. Experimental realization of such measurements has been limited to quasi-one-dimensional systems due to the extremely small signal size. Here we propose an alternative approach to obtain such information by exploiting the current-current correlations from the individual tips and present… Expand
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