Electronic transport in planar atomic-scale structures measured by two-probe scanning tunneling spectroscopy.

ABSTRACT: Miniaturization of electronic circuits into the single-atom level requires novel approaches to characterize transport properties. Due to its unrivaled precision, scanning probe microscopy is regarded as the method of choice for local characterization of atoms and single molecules supported on surfaces. Here we investigate electronic transport along the anisotropic germanium (001) surface with the use of two-probe scanning tunneling spectroscopy and first-principles transport calculations. We introduce a method for the determination of the transconductance in our two-probe experimental setup and demonstrate how it captures energy-resolved information about electronic transport through the unoccupied surface states. The sequential opening of two transport channels within the quasi-one-dimens

SUBMITTER: Kolmer M 

PROVIDER: S-EPMC6450957 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature