distinguish between electron rest mass and effective mass
Answers
Answer:
Free electron mass is the actual mass of an electron which is equal to kilograms. Effective mass is the mass that a particle seems to have when it is interacting with other particles.
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Answer:
Effective mass is under the infuence of periodic potential of crystal.
Explanation:
Effective mass of electron differs from the free electron mass as the effective mass is the mass of an electron under periodic potentials of a crystal while rest mass of electron is the mass of free electron .
The effective mass impacts the spectrum of a particle by determining how it is connected to the crystal lattice.
Effective mass is given below
where , m' = effective mass
E = energy
K = wave vector
The electron's effective mass in the valance band is always negative.