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

Merits and demerits of fixed bias, Merits: 1.      It is very simple to...

Merits: 1.      It is very simple to shift the operating point anywhere in the active region by just changing the base resistor (R B ). 2.      A very small number of compon

Drive operating envelopes and induction machines, Solve using data from the...

Solve using data from the DC machine data sheet, using the "hot" resistance value for all calculations. Note that the value of K on the sheet is for rated (100%) field flux. Assum

Variable capacitors, how can I simulate air variable capacitors in cst simu...

how can I simulate air variable capacitors in cst simulator?

Show process of power transmission and distribution, Q. Show Process of Pow...

Q. Show Process of Power transmission and distribution? The structure of a power system can be divided into generation (G), transmission, (T), and distribution (D) facilities,

#titl4 bit binary addere.., Ask question #Madvantages of 4 bit binary adder...

Ask question #Madvantages of 4 bit binary adder inimum 100 words accepted#

Program analysis , Program Analysis We have to find the greater of two...

Program Analysis We have to find the greater of two given  number. We  can store the given  numbers  in two  different  registers ( suppose register A and B). Then we will com

Illustratecommon base configuration, Q. IllustrateCommon base configuration...

Q. IllustrateCommon base configuration? Common base configuration: In this circuit the base is common to both input and the output.Such a configuration is also known as groun

What do you understand by breakdown diodes, (a) Draw and illustrate the V-I...

(a) Draw and illustrate the V-I characteristics of PN junction diode. How the characteristics reflected with change in temperature? (b) Describe physically why a PN junction dio

#titte machines, what is a armature reaction ?? give some concepts on doub...

what is a armature reaction ?? give some concepts on double rotating field theory?? thanks

Evaluate the current flowing in the direction from b to a, Q. A beam contai...

Q. A beam containing two types of charged particles is moving from A to B. Particles of type I with charge +3q, and those of type II with charge -2q (where -q is the charge of an e

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