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BCS gap, self-consistent

What you are seeing: the superconducting gap Δ(T)\Delta(T) from the BCS self-consistent gap equation, normalized to the zero-temperature gap. At T=TcT = T_c, Δ\Delta vanishes; the universal ratio 2Δ(0)/kBTc=3.5282\Delta(0)/k_B T_c = 3.528.

Figure 1. Δ(T)\Delta(T) from BCS gap equation; universal-shape curve.
N(0) V0.30
T / Tc0.30

WHAT TO TRY

  • Vary each control and watch the rail readouts respond.
  • Compare the diagnostic plot against the live scene.