Effective mass, Electrical Engineering

Assignment Help:

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         


Related Discussions:- Effective mass

Describe about digital communication systems, Q. Describe about digital com...

Q. Describe about digital communication systems fl A digital signal can be deflned as having any one of a finite number of discrete amplitudes at any given time. The signal coul

Opimization, I want to know latest optimization technique and algorithm for...

I want to know latest optimization technique and algorithm for modal reduction and pid controller design

Comparison with vacuum tubes, Comparison with vacuum tubes: Prior to t...

Comparison with vacuum tubes: Prior to the growth of transistors, vacuum (electron) tubes (or in the UK (United Kingdom) "thermionic valves" or just "valves") were the major a

Find the maximum frequency of an output sine wave, Find the maximum frequen...

Find the maximum frequency of an output sine wave which can be produced at an amplitude of 1.5 V if the op-amp slew rate is 0.5 V/µs.

Control signals - pins and signals , Control Signals There are two  con...

Control Signals There are two  control  signals and one  special  (ALE) in this  category. All these  signals  are output  signals. RD  (Read  signal ) it is  an active low

Sparking with electrical equipment, Sparking : In ordinary domestic situat...

Sparking : In ordinary domestic situations, small electrical sparks are usually not hazardous. In certain conditions which are frequently encountered in science labs, even the sma

Find v and i , Find V and I in the figure given below using ideal diode mod...

Find V and I in the figure given below using ideal diode model

What is peripheral component interconnect, What is a PCI bus? Periphera...

What is a PCI bus? Peripheral Component Interconnect: PCI bus was developed through Intel and introduced in 1993. This is geared specifically to fifth- and sixth-generation sys

24 - outlet uni-selector, In this case, 24 simultaneous calls can be put th...

In this case, 24 simultaneous calls can be put through switch. Generally a 24-outlet Uni-selector is used as a selector hunter. Every one of the 24 outlets is connected to one two-

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd