The role of gap plasmons in light emission from tunnel junctions.

@article{Divitt2013TheRO,
  title={The role of gap plasmons in light emission from tunnel junctions.},
  author={Shawn Divitt and Palash Bharadwaj and Luk{\'a}s Novotn{\'y}},
  journal={Optics express},
  year={2013},
  volume={21 22},
  pages={27452-9}
}
Light emission from the junction of a scanning tunneling microscope (STM) is examined in the presence of 20 nm topographical features in thin gold films. These features significantly modify the emission rates of the junction. Contributions to this modification are discriminated by examining emission rates on samples where the material is varied spatially. It is found that the variability in STM photoemission rates between a gold tip and a gold sample under ambient conditions is due to the… CONTINUE READING

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