question archive 1) (a) Show that —a—f = ? f [1 — f], where f is the Fermi Dirac ?mction
1) (a) Show that —a—f = ? f [1 — f], where f is the Fermi Dirac ?mction
Subject:Electrical EngineeringPrice: Bought3
1) (a) Show that —a—f = ? f [1 — f], where f is the Fermi Dirac ?mction. B as (b) Overlay plots of —:—£ with p = 0, for 3 different temperatures: 300K, 77K, and 4.2K. Set the x- axis limits to i78 meV and the y-axis limits from 0 to 0.05 meV". (The 4.2K plot will be cut off). Explain what is convenient about these three temperatures from an experimental point of view. (c) From the plots (or analytically if you choose — its messy) estimate the full-width half maximum (FWHM) of (— g—g) in terms of k3 T. The function (— 2—2:) determines the energy window where transport takes place in conductivity measurements.
