Journal
SURFACE SCIENCE
Volume 643, Issue -, Pages 10-12Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2015.07.006
Keywords
STM; Noise; Shot noise; Transport; Atomic contact
Categories
Funding
- [Sonderforschungsbereich 668]
- [Sonderforschungsbereich 677]
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The shot noise of the current through single-atom contacts has been measured in a scanning tunneling microscope at a temperature of 5 K. Electrical measurements at frequencies up to 120 kHz were performed on Au, Fe, and Co atoms on Au(111) using Au tips. The data from Fe and Co indicate spin polarized transmission through a single conductance channel. Optical measurements at sub-petahertz frequencies were carried out on Cu adatoms on Cu(111) using Cu tips. The data are consistent with previous observations from coinage metal contacts. (C) 2015 Elsevier B.V. All rights reserved.
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