Sommerfeld electronic heat capacity gamma = (pi^2/3) D(eps_F) k_B^2; symmetric-function expansion

Layer 1 — Physicsin the materials-physics subtree

Sommerfeld electronic-heat-capacity framework (Sommerfeld 1928 Z Phys 47, 1). Setup: at T << T_F (Fermi temperature), the Fermi-Dirac distribution f(eps) = 1/(exp((eps-mu)/k_B T) + 1) deviates from the T = 0 step function only in a thin…

Related concepts

Symmetric function
Theorem: gamma * 3/(pi^2 D k_B^2) - 1 = 0 (Sommerfeld coefficient identity)

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