Experimental visualization of scattering at defects in electronic transport through a single atomic junction
Abstract
For electronic transport at the nanoscale, coherent scattering at defects plays an important role. Therefore, the capability of visualizing the influence of defects on the conductivity of single atomic junctions may benefit the development of future nano-electronics. Here, we report imaging the coherent scattering from a defect with well-controlled geometry by quantum point contact microscopy recently developed by us. An ∼10% modulation in transport conductance of a single atomic junction is observed, with a phase shift of nearly π compared to the tunneling conductance. With the well-defined scattering geometry, we performed a theoretical calculation of the conductance and found the result consistent with the experiment.
Citation
Zhang , Y , Wahl , P & Kern , K 2013 , ' Experimental visualization of scattering at defects in electronic transport through a single atomic junction ' , Physical Review. B, Condensed matter and materials physics , vol. 87 , no. 20 , 205417 . https://doi.org/10.1103/PhysRevB.87.205417
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
ISSN
1098-0121Type
Journal article
Rights
© 2013. American Physical Society.
Description
Funding: Chinese Scholarship CouncilCollections
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