Compute the integral of the density of states (11.9.16) for the quasiparticle energy spectrum (11.9.15), and plot it (setting μ = 1 and Δ = 0.02, and all other constants to unity). It should have the same form as the experimental results for the normal–insulator–superconductor junction plotted in Figure 11.11(b).

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E(K) = JE ƏNk -= Ex (uz - √²) + 2 Auk Vk = (Ek+ x + -) ( u ² - √²) Ek = √ A²+ E². (11.9.15)