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

Digital electronics, an 8 bit successive approximation adc has a resolution...

an 8 bit successive approximation adc has a resolution of 20mv. what will be its ouput analogue input of 2.17v

Signals and system, how can i calculate that is following signal is periodi...

how can i calculate that is following signal is periodic or not? X[n]= ?_(k=-8)^8¦?{d[n-4k]-d[n-1]-4k]}?

Discrete time system transfer function, For a discrete time unit step input...

For a discrete time unit step input x(kT), the output  y(kT) of a system is shown below,   Part (a)  Obtain the Z-transform of the output signal y(kT).   Part (b)   F

Show applications for dc machines, Q. Show Applications for DC Machines? ...

Q. Show Applications for DC Machines? Dc motors find wide applications in which control of speed, voltage, or current is essential. Shunt motors with constant speed are used fo

Details of a distribution transformer, Electrical network details: 1  ...

Electrical network details: 1          single line diagrams with conductor sizes, transformer locations, consumer location, lengths, capacitors, and load, etc., 2

Wcdma, what is that mean and explain

what is that mean and explain

Chopper configuration - power supplies , Chopper Configuration Choppe...

Chopper Configuration Chopper are classified  in five  different classes according  to their operating capability in particular quadrant. The  current  directions and voltage

What do you mean by pinch off voltage, Q. What do you mean by Pinch off vol...

Q. What do you mean by Pinch off voltage? As the voltage Vds is increased from 0 to a few volts, the drain current will increase as  determined by Ohm's law and the plot of Id

Give the properties and application of glass, Give the properties and appli...

Give the properties and application of glass. Glass - It is an inorganic material made by the fusion of various metallic oxides. The properties of glass are as - Glass is

Explain magnetic property of ferromagnetic materials, The critical temperat...

The critical temperature above which the ferromagnetic materials lose their magnetic property is known as (A) Hysteresis.                                   (B) Curie point.

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