Abstract:Solid 3He is the most quantum mechanical of the inert gas solids. In the bcc solid close to the melting pressure, 3He atoms exchange lattice sites with their neighbors millions of times each second, thereby reducing their zero point energy. This atom-atom exchange leads to a spin exchange energy in the solid which is nearly ten thousand times larger than the dipole-dipole energy between neighboring 3He atoms, and as a result, nuclear antiferromagnetism in solid 3He occurs at the unusually high temperature of a… Show more
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