Talk:Magnetoresistance

explanation

what is meant by "s-d scattering"? - Saibod 10:04, 17 October 2007 (UTC)

The scattering of electrons in the free-electron-like 4sp band by the 3d electrons. Yes, this should be explained somewhere. /Pieter Kuiper 14:46, 17 October 2007 (UTC)

Inconsistencies

There are a couple of inconsistencies in this article.

First, under "Discovery," it is stated that the resistance decreases when the current is at 90 degrees to the magnetic force, but in the caption of the Corbino disc picture it's stated that this configuration causes an increase in the resistance.

Second, the first equation in "The Corbino disc" section gives a contribution to the velocity vector proportional to v cross B. But v cross B is perpendicular to v by definition, so using this to solve for v cannot be right unless v adjusts itself such that the E field cancels the vector component perpendicular to v itself. If this is right, it needs to be explained more clearly.

HEL (talk) 02:52, 30 November 2009 (UTC)

Linear magnetoresistance

Hey, I'm thinking of writing an article on linear magnetoresistance. Does that sound good to you guys? I'm thinking it makes sense to stand on its own, but perhaps it should be bundled with this page. Let me know if you have any ideas. Tedsanders (talk) 00:47, 25 February 2015 (UTC)

Solving for v seems to be incorrect

The correct last term seems to be u^3(B.E)B not u^2(B.E)B

If you check the units they do not match.

First paragraph rewritten

It cried for creating some system in the jungle of various magnetoresistive phenomena. This is my take on it. Yes, writing about linear magnetoresistance is a good idea and it would be important to link it to the "usual positive MR in metals" - it is simply unsaturated MR due to open orbits which can be as large as your experimental setup allows you to go (the experiment on WTe2 is nothing so special, it is simply the current record value in MR, as far as I know, in a system with open orbits). Regarding this "usual positive MR in metals", it would be good to write a separate section starting with the two-band MR (this could be based e.g. on the beautiful article PRB 37, 2756). Another section giving some more details on multicomponent systems (citing GMR, T(A)MR, EMR...) would also be nice. As for the ordinary MR, I am not sure this is a universally established expression (with unique meaning). I opted for removing it. If it is to return, it would be good to give some reasonable reference. Kvyb6672 (talk) 08:30, 23 April 2015 (UTC)

Errors in figure

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The Magnetic field in the Corbino disk figure is wrong, it should not be radial, but axial. To correct the figure, magnetic field should be represented with a circle with a dot, such as the green vectors in this picture. B points out of the plane, where it is perpendicular to the current flow for the whole ring. For anyone unsure, check the original source cited, (Giuliani), which is correct. Forbes72 (talk) 16:53, 24 August 2018 (UTC)

Applications section

Most physics articles on cutting-edge theory have sections on potential applications. We should add a section here. --Daviddwd (talk) 17:44, 18 September 2018 (UTC)