How can you derive the effective mass?

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SUMMARY

The effective mass of an electron can be derived from the energy band structure equation, particularly near the band minimum for electrons and the band maximum for holes. This derivation involves algebraic manipulation of the energy equation, as confirmed by resources such as the Colorado School of Mines lecture on solid-state physics. The relationship between kinetic energy and momentum is also crucial, where classical kinetic energy is expressed as 1/2 mv² and in quantum mechanics as p²/2m, with momentum defined as p = ħk.

PREREQUISITES
  • Understanding of energy band structure in solid-state physics
  • Familiarity with Newton's second law
  • Knowledge of quantum mechanics, specifically momentum and wave functions
  • Basic algebraic manipulation skills
NEXT STEPS
  • Study the derivation of effective mass in solid-state physics
  • Review the Colorado School of Mines lecture on solid-state physics
  • Learn about the relationship between kinetic energy and momentum in quantum mechanics
  • Explore the implications of effective mass in semiconductor physics
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Students and professionals in solid-state physics, semiconductor researchers, and anyone interested in the mathematical derivation of effective mass in quantum mechanics.

bluejay27
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I have seen that the energy of the band structure is defined in the following form. How do you obtain this form of the equation? Additionally, how can you obtain the effect mass of the electron? Do you just manipulate algebraically the equation of the energy of the band structure and solve it for for the m_e*?
 

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In classical physics, kinetic energy is 1/2 mv^2 or p^2/2m.
In QM the momentum p=hbar k...
 

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