 Unconventional superconductors
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Conundrum
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Wed Aug 20 2014, 10:48PM
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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
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Hi all.
Looks like FeSe as a single atomic layer on SrTiO3 superconducts up to 106K.
I had an idea, to alternate graphene and selenium but dope with a tiny amount (1%) of magnesium
in order to alter the surface properties of the graphene enough to superconduct in solid state without using water or heptane.
See 
Does anyone have the equipment to test this?
One possibility is to use a sheet from a selenium rectifier, a sheet of pyrolytic graphite sanded flat and doped with Mg then pressed onto the rectifier and heated with pressure to fuse the surfaces.
Also relevant, BiSrSeOxmight also be interesting as the electrons should be confined in thin layers similar to the Cu-O planes in the cuprates.
EDIT: Spoke to some experts on this, it could work but they seem to think it needs oxygen in the material no matter which one you use, cuprates need more.
One interesting approach which they did support was my idea to substitute zinc for copper as ZnO has interesting properties in single crystal form.
In this case the formula would be YSr2Zn3O6.1+
Might work, will have to try it and see because PWD is likely to mean the +4 state and +2 complement (see J.Eck's work)
-A
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