Effective mass, Electrical Engineering

Effective Mass

  • The electrons' "wave-particle" motion in a lattice is not the same as that for a free electron, because of the interaction with the periodic potential of the lattice.
  • To still be able to treat these particles as "free", the rest mass has to be altered to take into account the influence of the lattice.
  • The calculation of effective mass takes into account the shape of the energy bands in three-dimensional (3D) k-space, taking appropriate averages over the various energy bands.
  • The effective mass of an electron in a band with a given (E,k) relation is given by

 

                               Mx = [h/(2π)]2 / d2E/dk2         

Posted Date: 1/11/2013 4:32:12 AM | Location : United States







Related Discussions:- Effective mass, Assignment Help, Ask Question on Effective mass, Get Answer, Expert's Help, Effective mass Discussions

Write discussion on Effective mass
Your posts are moderated
Related Questions
Q. Draw a neat circuit of Colpitt's oscillator using an n-p-n transistor. Give its equivalent circuit obtain expressions for (i) frequency of oscillation and(ii) minimum gain for s

Q. Show NPN Common Collector Amplifier? The common collector amplifier, often called an emitter follower since its output is taken from the emitter resistor, is useful as

Q.   Describe in detail the construction and working of analog type storage oscilloscope. Explain the principle of secondary emission. Analog Storage Oscilloscopes: Storage o

Q. Explain Shunt-field control process? Shunt-field control, armature-resistance control offers a constant-torque drive because both flux and, to a first approximation, allowab

transient analysis of clampers

The subject of electrical measurements is such a large one that entire books have been written on the topic. Only a few basic principles will be introduced here. Practical measurem


circuit for the buck boost regulator connected to a ic regulator , my voltae range is 5v to 24v?

Explain multimeter A multimeter, or universal instrument, may be used to measure voltage, current and resistance.