Kirkham, CJ;
Longobardi, M;
Koester, SA;
Renner, C;
Bowler, DR;
(2017)
Subatomic electronic feature from dynamic motion of Si dimer defects in Bi nanolines on Si(001).
Physical Review B
, 96
(7)
, Article 075304. 10.1103/PhysRevB.96.075304.
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Abstract
Scanning tunneling microscopy (STM) reveals unusual sharp features in otherwise defect-free Bi nanolines self-assembled on Si(001). They appear as subatomic thin lines perpendicular to the Bi nanoline at positive biases and as atomic size beads at negative biases. Density functional theory (DFT) simulations show that these features can be attributed to buckled Si dimers substituting for Bi dimers in the nanoline, where the sharp feature is the counterintuitive signature of these dimers flipping during scanning. The perfect correspondence between the STM data and the DFT simulation demonstrated in this paper highlights the detailed understanding we have of the complex Bi-Si(001) Haiku system. This discovery has applications in the patterning of Si dangling bonds for nanoscale electronics
| Type: | Article |
|---|---|
| Title: | Subatomic electronic feature from dynamic motion of Si dimer defects in Bi nanolines on Si(001) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.96.075304 |
| Publisher version: | http://doi.org/10.1103/PhysRevB.96.075304 |
| Language: | English |
| Additional information: | ©2017 American Physical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, SCANNING-TUNNELING-MICROSCOPY, SURFACES, BISMUTH, IMAGES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1572276 |
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