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

Bus organisation, Bus Organisation Set of  communication lines in micro...

Bus Organisation Set of  communication lines in microprocessor  which  carry  bits from microprocessor to  peripherals  ( memory  inputs ports  output  ports  and other chips

Explain the asynchronous decade counter, Explain the Asynchronous Decade Co...

Explain the Asynchronous Decade Counter? The binary counters earlier introduced have two to the power n states. But the counters with states less than this number are as well

Transistor as a switch, Transistor as a switch: Transistors are genera...

Transistor as a switch: Transistors are generally employed as electronic switches, for both of the high power applications including switched-mode power supplies and low power

Show a block diagram of a 4-bit, Q. Show a block diagram of a 4-bit, parall...

Q. Show a block diagram of a 4-bit, parallel-input shift-right register and briefly explain its operation.

Electrical, star delta drawing with timer

star delta drawing with timer

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

Why hard magnetic materials are used, Hard magnetic materials are used for ...

Hard magnetic materials are used for making (A) Permanent magnets. (C) Conductors. (B) Insulator. (D)Temporary magnets. Ans: Hard magnetic materials are

State norton''s theorem, Norton's Theorem Nortons Theorem states: "A...

Norton's Theorem Nortons Theorem states: "Any linear circuit containing several energy sources and resistances can be replaced by a single Constant Current generator in para

Dc power supplies, 1.   Design four (4) different 5 volt DC power supplies...

1.   Design four (4) different 5 volt DC power supplies to operate from 230 volts AC. The four power supplies are to have the same full wave rectifier with capacitive filte

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