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 propose 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-dimensional Ge dimer rows in the surface gives rise to two distinct resonances in the transconductance spectroscopic signal, consistent with phase-coherence lengths of up to 50 nm and anisotropic electron propagation. Our work paves the way for the electronic transport characterization of quantum circuits engineered on surfaces.
- Authors:
-
[1];
[2];
[3];
[3];
[5];
- Jagiellonian Univ., Krakow (Poland); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Donostia International Physics Center (DIPC), Donostia-San Sebastián (Spain)
- Jagiellonian Univ., Krakow (Poland)
- Inst. of Materials Research and Engineering (Singapore)
- Donostia International Physics Center (DIPC), Donostia-San Sebastián (Spain); Basque Foundation for Science (IKERBASQUE), Bilbao (Spain)
- Center for Materials Physics CSIC-UPV/EHU, Donostia-San Sebastián (Spain)
- Center for Materials Elaboration and Structural Studies (CEMES), Toulouse (France)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- OSTI Identifier:
- 1506799
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Kolmer, Marek, Brandimarte, Pedro, Lis, Jakub, Zuzak, Rafal, Godlewski, Szymon, Kawai, Hiroyo, Garcia-Lekue, Aran, Lorente, Nicolas, Frederiksen, Thomas, Joachim, Christian, Sanchez-Portal, Daniel, and Szymonski, Marek. Electronic transport in planar atomic-scale structures measured by two-probe scanning tunneling spectroscopy. United States: N. p., 2019.
Web. doi:10.1038/s41467-019-09315-6.
Kolmer, Marek, Brandimarte, Pedro, Lis, Jakub, Zuzak, Rafal, Godlewski, Szymon, Kawai, Hiroyo, Garcia-Lekue, Aran, Lorente, Nicolas, Frederiksen, Thomas, Joachim, Christian, Sanchez-Portal, Daniel, & Szymonski, Marek. Electronic transport in planar atomic-scale structures measured by two-probe scanning tunneling spectroscopy. United States. https://doi.org/10.1038/s41467-019-09315-6
Kolmer, Marek, Brandimarte, Pedro, Lis, Jakub, Zuzak, Rafal, Godlewski, Szymon, Kawai, Hiroyo, Garcia-Lekue, Aran, Lorente, Nicolas, Frederiksen, Thomas, Joachim, Christian, Sanchez-Portal, Daniel, and Szymonski, Marek. Fri .
"Electronic transport in planar atomic-scale structures measured by two-probe scanning tunneling spectroscopy". United States. https://doi.org/10.1038/s41467-019-09315-6. https://www.osti.gov/servlets/purl/1506799.
@article{osti_1506799,
title = {Electronic transport in planar atomic-scale structures measured by two-probe scanning tunneling spectroscopy},
author = {Kolmer, Marek and Brandimarte, Pedro and Lis, Jakub and Zuzak, Rafal and Godlewski, Szymon and Kawai, Hiroyo and Garcia-Lekue, Aran and Lorente, Nicolas and Frederiksen, Thomas and Joachim, Christian and Sanchez-Portal, Daniel and Szymonski, Marek},
abstractNote = {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 propose 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-dimensional Ge dimer rows in the surface gives rise to two distinct resonances in the transconductance spectroscopic signal, consistent with phase-coherence lengths of up to 50 nm and anisotropic electron propagation. Our work paves the way for the electronic transport characterization of quantum circuits engineered on surfaces.},
doi = {10.1038/s41467-019-09315-6},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {Fri Apr 05 00:00:00 EDT 2019},
month = {Fri Apr 05 00:00:00 EDT 2019}
}
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