A large electric field version of Ohm's law is presented for non-polar semiconductors including a carrier-carrier scattering time τ*. Both the drift momentum 〈k〉 and average carrier energy 〈E〉 decrease with τ*, but only slightly. Nothing that for carrier-carrier scattering as fast as carrier-phonon scattering, the spherical part of the distribution function is well approximated by a Gaussian at all fields, we obtain an expression for 〈k〉 and 〈E〉 in good agreement with the exact numerical results over the entire range of electric fields.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry