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

Name the elements related to capacitance, Elements related to capacitance ...

Elements related to capacitance a.  Electric field: Area that surrounds the electric charge or charges system where the enhancing and reducing of electric force exists.

Find the antenna temperature, Q. If an antenna has an available noise power...

Q. If an antenna has an available noise power of 1.6 × 10 -15 W in a 1-MHz bandwidth, find the antenna temperature.

States ohm''s law, States Ohm's law Ohm's law describes that the curren...

States Ohm's law Ohm's law describes that the current I flowing in a circuit is directly proportional to the applied voltage V and inversely proportional to the resistance R, g

Determine the speed of prime mover of the generator, A synchronous generato...

A synchronous generator has a rotor with six poles and operates at 60 Hz. (a) Determine the speed of prime mover of the generator. (b) Repeat part (a) if the generator has 12

Buck converter - power supplies , Buck Converter In buck  converters th...

Buck Converter In buck  converters the output  voltage is  always  less than the  input  voltage. The basic  circuit  of buck converter is shown  in figure. The operation of th

Explain the working of leds, Q. Explain the working of LEDs OPTOELECTRO...

Q. Explain the working of LEDs OPTOELECTRONIC devices either produce light or use light in their operation. The first of these, the light-emitting diode (LED), was developed to

List the various addressing modes present in 8086, List the various address...

List the various addressing modes present in 8086? There are 12 addressing modes are present in 8086. They are, (a) Register and immediate addressing modes _  Register ad

Explain working of voltmeter, Q. Explain working of Voltmeter? In order...

Q. Explain working of Voltmeter? In order tomeasure the potential difference between two terminals or nodes of a circuit, a voltmeter is connected across these two points. A pr

Financing the power sector projects, Financing the power sector projects: ...

Financing the power sector projects:   Massive investment is required for the targeted expansion of the sector. It has been estimated at Rs. 9 lakh crores in the further 10 yea

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