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amitrt
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If effective mass in schrodinger equation takes into account for coupling by other bands or so to say by other electrons, and in this way we don't care about effect of other electrons and deal with lattice potential.
amitrt said:If effective mass in schrodinger equation takes into account for coupling by other bands or so to say by other electrons, and in this way we don't care about effect of other electrons and deal with lattice potential.
The notion of effective mass is a concept used in physics to describe the behavior of particles in a solid material. It is a measure of how a particle responds to an external force, such as an applied electric field.
The notion of effective mass is used when studying the electronic and optical properties of solids. It is especially useful in semiconductors, where the behavior of electrons can be described using an effective mass instead of their actual mass.
Effective mass is not a physical property of a particle, but rather a mathematical concept used to simplify calculations. It takes into account the interactions between particles in a solid, which can affect their behavior and make it different from their actual mass.
Yes, effective mass can be negative in certain materials. In these cases, it means that the particle behaves as if it has a negative mass in response to an external force. This phenomenon is known as negative effective mass and is a result of the electronic band structure in the material.
Effective mass is typically calculated using theoretical models and simulations. However, it can also be measured experimentally using techniques such as cyclotron resonance or Hall effect measurements.