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

Describe the memory allocation schemes in an embedded system, a. Describe t...

a. Describe the memory allocation schemes in an embedded system. Also give a short-note on extended memory. (6) b. Consider a byte - addressable computer with 16 - bit addresses

How many machine cycles does 8085 have, How many machine cycles does 8085 h...

How many machine cycles does 8085 have, mention them The 8085 have seven machine cycles. They are Opcode fetch Memory read Memory write I/O read I/O

Merits and demerits of voltage divider bias, Merits and Demerits of Voltage...

Merits and Demerits of Voltage divider bias: Merits: 1. Not like the above circuits, only one dc supply is essential. 2. Operating point is approximately independent o

Explain polymers and their applications, Explain Polymers and their applica...

Explain Polymers and their applications. Polymeric materials or plastics contain a large group of organo or organic metallic high molecules compound. The common properties of s

Centrifugal compressor, hi I need information of Compressor Shaft Impelle...

hi I need information of Compressor Shaft Impellers Coupling Hub Thrust Collars Balance Drum for centrifugal compressor with pecture

Define hrq, Define HRQ? The hold demand output requests the access of t...

Define HRQ? The hold demand output requests the access of the system bus. In non- cascaded 8257 systems, this is linked with HOLD pin of CPU. In cascade mode, this pin of a sla

Strategic perspective of an organization, Strategic Perspective of An organ...

Strategic Perspective of An organization Strategic perspectives cover functions such as revenue, customer satisfaction, people, procedure and technology. Every organization re

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