How does Fermi velocity compare between two metals with different energy bands?

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SUMMARY

The discussion focuses on calculating and comparing the Fermi velocity of two metals with energy bands described by E=Ak² and E=Bk², where A>B and both have equal Fermi energy. The relationship between Fermi energy and velocity is crucial for this calculation. The Fermi velocity can be derived from the equation v_F = √(2E_F/m), where E_F is the Fermi energy and m is the effective mass of the electrons. Understanding these relationships allows for a clear comparison of the Fermi velocities of the two metals.

PREREQUISITES
  • Understanding of energy band theory in solids
  • Familiarity with the concept of Fermi energy
  • Knowledge of the equation for Fermi velocity
  • Basic principles of solid-state physics
NEXT STEPS
  • Study the derivation of the Fermi velocity equation v_F = √(2E_F/m)
  • Explore the implications of different effective masses in metals
  • Investigate the impact of energy band structure on electronic properties
  • Learn about the differences between metals and semiconductors in terms of Fermi energy
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Students and professionals in solid-state physics, materials science, and electrical engineering who are interested in the electronic properties of metals and their applications in technology.

Josh1079
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Homework Statement


The energy band for two different metals can be expressed as E=Ak2 and E=Bk2, respectively. Suppose A>B, and the Fermi energy is equal for these two metal. Calculate and compare the Fermi velocity for both metals.

Homework Equations

The Attempt at a Solution


I'm very confused since I can't really see how the band energies and fermi energy are related.

Thanks!
 
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You only need the equation that combines the Fermi energy and velocity...
 

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