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

What do you mean by digital systems, Q. What do you mean by digital systems...

Q. What do you mean by digital systems? Electronics information is generally placed into two categories as digital and analog. The Digital information is represented in discret

Explain polyphase induction motor, Q. Explain polyphase induction motor? ...

Q. Explain polyphase induction motor? The polyphase induction motor operates with polyphase alternating current applied to the primary winding, usually located on the stator of

Dwsdasdad, adadaaaaaaaaaaaaaaaaaaaaaaascaacacaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...

adadaaaaaaaaaaaaaaaaaaaaaaascaacacaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAsk question #Minimum 100 words accepteda

Define multiplexing, 1 Explain the advantages and disadvantages of optical ...

1 Explain the advantages and disadvantages of optical fiber versus copper Medium of communication 2 Define multiplexing. Explain TDM 3 Describe the protocol architecture and

Followings are some disadvantage , Followings  are some  disadvantage ...

Followings  are some  disadvantage a.   Higher latching and holding  current b.Higher  on state  voltage  drop and power  losses c.Higher  gate  current d.Higher  gat

Discuss how wavelet transform is suitable, Q. Discuss how Wavelet Transform...

Q. Discuss how Wavelet Transform is suitable for each application below. You can give examples  if you need to. a) multi-resolution analysis of signals and images b) space-fr

Calculate the ratio v/i for an ideal diode, Q. Assuming the diode to obey I...

Q. Assuming the diode to obey I = IS (e V/0.026 -1), calculate the ratio V/I for an ideal diode with I S = 10 -13 A for the applied voltages of -2,-0.5, 0.3, 0.5, 0.7, 1.0, and

Voltmeter transistor, explain basic working of voltmeter transistor

explain basic working of voltmeter transistor

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