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

@article{Leeuwenhoek2020ModelingGF,
  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},
  year={2020},
  volume={102},
  pages={115416}
}
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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A team headed by Milan Allan and Simon Gröblacher has succeeded in devising a fabrication procedure for integrated double-tip devices with a tip separation of around 35 nanometers, and the authors believe that the large contact pads and adjustable footprint of the novel tips allow easy integration with most existing STM systems. Expand

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