Fig. 1: Comparison of the maximum zT of a step-function transmission function with a delta-function one.
From: The best thermoelectrics revisited in the quantum limit
a \(z{T}^{\max }\) as a function of β for the step-function transmission function Θ(x − b) and delta-function transmission function δ(x − b) with b = 2.4. The insets b and c illustrate the step and delta functions, respectively.
