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Related Concept Videos

Subatomic Particles03:37

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Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom.
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Atomic Structure01:33

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Atomic Structure01:17

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Atomic Nuclei: Nuclear Spin01:08

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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Atomic seesaws.

Arie van Houselt1, Bene Poelsema, Harold J W Zandvliet

  • 1Physical Aspects of Nanoelectronics, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|March 10, 2011
PubMed
Summary
This summary is machine-generated.

Atomic seesaw dynamics were studied using scanning tunneling microscopy. Phasons drive flip-flop motion on bare Ge(001) surfaces, but are pinned on Au-induced nanowires, limiting seesaw behavior.

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Area of Science:

  • Surface science
  • Atomic dynamics
  • Scanning tunneling microscopy

Background:

  • Atomic seesaws, specifically Ge dimers on Ge(001) surfaces, exhibit unique flip-flop motion.
  • Understanding these dynamics is crucial for nanoscale material behavior.

Purpose of the Study:

  • To investigate the dynamics of two types of atomic seesaws.
  • To compare seesaw behavior on bare Ge(001) and on Au-induced nanowires on Ge(001).

Main Methods:

  • Open feedback loop scanning tunneling microscopy was employed.
  • The study focused on Ge dimers on Ge(001) and Au-induced nanowires on Ge(001).

Main Results:

  • On bare Ge(001), phasons induce one-dimensional random walk, driving dimer flip-flop motion.
  • On Au-induced nanowire ridges, phasons are pinned, restricting flip-flop behavior to a limited number of dimers.

Conclusions:

  • Phason dynamics significantly influence atomic seesaw behavior.
  • Surface structure, like Au nanowires, can alter or inhibit atomic motion.