[NewCandle] Image magnetic monopole charge

[Nick Reiter]

Heyyo,

Thats one of the puzzlers in this matter - the conductivity of the material versus the theory of the image magnetic monopoles.  A number of years back, I had made a small amount of intrinsic Bi2Te3 to try it as a contact interface for CdTe solar films.  I don't even recall if I thought to measure the conductivity of it at the time.  I do know that other tellurides in an intrinsic form can span quite a range.  CdTe and ZnTe for example, are highly resistive.  SnTe, NiTe and Sb2Te3 are all about as conductive as Te by itself, which is usually in the range of 10s of ohms-cm resistivity.  Peltier blocks are probably in that range also - metalloid.

When I am back in the lab on Monday, I can try to look some of this up.  OH, wait, I have my old CRC manual here...

Hm, nuts.  Nothing listed as resistivity for i-Bi2Te3.  However the bandgap is said to be .13, so I imagine that would make it somewhat conductive.

Guess I may have to just make some and see.

n
> you write:
> >No problem with trying some of this Peltier chip
> material
> > obviously, but I do believe I want to also make some
> Bi2Te3
> > from the high purity Bi and Te materials I have, in a
> reaction
> > ampoule.  I can then just go ahead and diffuse
> .67% at. Sn into the melt.
> 
> Sounds like a good idea. The paper you posted was fairly
> specific
> about what it took to make the topological insulator
> material.
> Aren't the peltier materials too far out of spec to be of
> use?
> It might explain the seemingly random variation of results
> in your force experiments though. Perhaps a marginal or
> acceptable
> composition was achieved in small portions of the
> junction by accident. One thing I am still confused about
> is just how conductive is the Sn doped Bi2Te3.
> 
> K.
> 
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