Kondo resonance - need concept help.

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Discussion Overview

The discussion revolves around the Kondo effect and specifically the concept of Kondo resonance. Participants are exploring the underlying physics, including the interaction between conducting electrons and magnetic impurities, and the implications for resistivity and local density of states.

Discussion Character

  • Exploratory, Conceptual clarification

Main Points Raised

  • One participant describes the Kondo effect as an exchange of spin due to the interaction between a free conducting electron and a magnetic metal impurity, leading to increased resistivity at low temperatures.
  • The same participant expresses confusion about the nature of the resonance produced by the Kondo effect and seeks clarification on what is resonating and how this leads to an increase in local density of states.
  • Another participant suggests referring to Mahan's "Many-Particle Physics" text for a more detailed discussion of the Kondo effect.
  • A subsequent reply indicates that the suggested text is currently unavailable at the university library.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the understanding of Kondo resonance, as one participant is seeking clarification while another suggests a resource for further exploration.

Contextual Notes

The discussion highlights a lack of access to specific literature that may provide deeper insights into the Kondo effect, which could limit the understanding of the concepts being discussed.

Beer-monster
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I've come across the Kondo effect in my research and specifically measuring the Kondo resonance. Now I'm sure I don't need to be an expert but I having some trouble clearing the concepts, the actual physics in my head.

I know the Kondo effect is an exchange of spin do to an interaction between a free conducting electron and a magnetic metal impurity, which leads to additional scatter and an increase of resistivity at low temp.

However what I'm having trouble with is understanding how this produces a resonance. What is resonating? How does this effect lead to an sudden increase in local density of states?

Appreciate any help with clarifying this matter:biggrin:
 
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OK... let me ask you this. Do you have Mahan's "Many-Particle Physics" text? He has quite an extensive discussion of this effect. If you do, and you don't quite understand what he's saying, then we can at least start from that level.

Zz.
 
Afraid not. I can try the university library
 
They have it but its on loan at the moment
 

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