Negative differential resistance in GeSi core-shell transport junctions: the role of local sp(2) hybridization.

@article{Liu2016NegativeDR,
  title={Negative differential resistance in GeSi core-shell transport junctions: the role of local sp(2) hybridization.},
  author={Nuo Liu and Lei Zhang and Xiaobin Chen and Xianghua Kong and Xiaohong Zheng and Hong Guo},
  journal={Nanoscale},
  year={2016},
  volume={8 35},
  pages={
          16026-33
        }
}
We report a theoretical investigation of nonlinear quantum transport properties of Au/GeSi/Au junctions. For GeSi semiconducting core-shell structures brought into contact with Au electrodes, a very unusual behavior is that the tunneling transport is on-resonance right at equilibrium. This resonance is not due to the alignment of a quantum level in GeSi to the electrochemical potential of Au, but due to the alignment of very sharp DOS features - hot spots, localized at the two Au/GeSi… CONTINUE READING