Matthiessen's rule, relating it to applied electric field

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SUMMARY

Matthiessen's rule states that the total electronic resistivity is the sum of the resistivities due to impurities and the lattice, treated as independent components. The discussion highlights the confusion regarding the application of this rule in the presence of an electric field, specifically questioning its independence from the wavevector. It is established that if resistivity is influenced by the electric field, it alters the wavevector, thus complicating the application of Matthiessen's rule. Clarification on these dependencies is essential for accurate application in practical scenarios.

PREREQUISITES
  • Understanding of Matthiessen's rule in solid-state physics
  • Basic knowledge of electronic resistivity and conductivity
  • Familiarity with wavevector concepts in quantum mechanics
  • Concept of electric field effects on material properties
NEXT STEPS
  • Research the implications of electric fields on resistivity in materials
  • Study the relationship between wavevector and resistivity in solid-state physics
  • Explore advanced topics in electronic band structure and scattering mechanisms
  • Learn about the limitations of Matthiessen's rule in non-linear regimes
USEFUL FOR

Physics students, materials scientists, and electrical engineers interested in the effects of electric fields on electronic properties and resistivity in materials.

rwooduk
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Homework Statement


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The Attempt at a Solution


I understand the basic concept of Matthiessen's rule that the contribution to electronic resistivity / conductivity is split into two independent componants, resistivity due to impurities and resistivity due to the lattice. But I am unsure how this relates to if an electric field is applied. Also we have been taught it only applies if independent from the wavevector, could someone perhaps emphasise this a little?

Please could someone give me a point in the right direction.
 
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The only thing I can think is that if the resistivity is proportional to the electric field then it somehow changes the wavevector so it cannot be used.
 

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