SUMMARY
The discussion centers on the relationship between relaxation time (\tau) and the lifetime of Fermi sphere displacement in the context of electron behavior under an applied electric field. The user seeks clarification on whether these two concepts are equivalent or distinct, as both are denoted by \tau in their notes. Key equations provided include electrical conductivity (\sigma = \frac{n e^2 \tau}{m}) and electrical resistivity (\rho = \frac{1}{\sigma}=\frac{m}{n e^2 \tau}). The user also mentions specific data for copper, including a relaxation time of 2.50e10-14s, density of 8940 kg/m³, and molar mass of 63.5 g.
PREREQUISITES
- Understanding of Fermi sphere concepts in solid-state physics
- Familiarity with electrical conductivity and resistivity equations
- Knowledge of electron dynamics in electric fields
- Basic principles of solid-state physics and material properties
NEXT STEPS
- Research the concept of relaxation time in solid-state physics
- Study the derivation and implications of the electrical conductivity equation
- Explore the relationship between electron mobility and Fermi sphere displacement
- Learn how to calculate electrical resistivity using provided material properties
USEFUL FOR
Physics students, electrical engineers, and researchers interested in solid-state physics and the behavior of electrons in conductive materials.