Understand Kohn’s Anomaly: Impact Of Fermi Surface On Metal Energy Dispersion
Kohn’s Anomaly arises due to a dip in metal energy dispersion near the Fermi level, which separates occupied and unoccupied states. This dip is influenced by the shape of the Fermi Surface, which determines electron velocity and density of states discontinuity. The Fermi Level regulates the Fermi Surface shape, defining the boundary of occupied states….