4
$\begingroup$

This is an IBM movie about how they move single atoms: http://www.youtube.com/watch?v=oSCX78-8-q0

There are often some "wavish" pattern around atoms on these pictures, like below some of them marked with red triangles:

enter image description here

Are these patterns real?

For example, it can be disturbances in sublayer? Or it can be observable quantum non-locality of atoms?

Or this can be just imperfection of microscopic device.

What is this?

$\endgroup$
  • $\begingroup$ perhaps the valence electrons in the copper background being attracting to the positively charged charged carbon nuclei $\endgroup$ – Jimmy360 Mar 30 '15 at 6:03
  • $\begingroup$ Why it is repeating multiple times? $\endgroup$ – Dims Mar 30 '15 at 17:54
2
$\begingroup$

They are Friedel Oscillations. They occur because the valance electrons moving freely in the metal, upon encountering the carbon atoms, are scattered by the impurity. More information here. Here is a picture:

enter image description here

Very similar to the Friedel Oscillations in the question's picture:

enter image description here

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.