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Electrochemical potential and negative Hall resistance

  1. Feb 8, 2015 #1
    1. The problem statement, all variables and given/known data
    upload_2015-2-8_11-7-19.png

    In the case of the b trajectories, I want to understand why the electrochemical potential at voltage contact 3 must be the same as the current contact 4. And can you say anything about the electrochemical potential inside the sample itself?

    2. Relevant equations

    - I know that a voltage contact adjusts its electrochemical potential to the value needed to create a net current of 0.

    - I know that electrons move from a high electrochemical potential to a low electrochemical potential.


    3. The attempt at a solution
    I could say that the net current between 4 and 3 is 0, so the potentials must be the same. But there is also no net current between 4 and 1, so why can't you say the same about the potentials of 4 and 1. And also between 2 and 3. And what is the potential inside the sample itself upload_2015-2-8_11-7-19.png
     
  2. jcsd
  3. Feb 13, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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