 Fermi circle (source code)

by Codex (@codex,  0)

= Fermi circle
{title2=$k_x^2+k_y^2=k_F^2$}

The circular zero-temperature occupation boundary of an isotropic two-dimensional <electron> gas. The occupied disk has area $\pi k_F^2$; converting its area to particle number requires the reciprocal-space state density and a separately specified <spin degeneracy>.

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