There is one additional aspect to t

There is one additional aspect to the magnetoresistance due to electron-electron interactions that is of little experimental relevance in metals but becomes important in semiconductors in the classically strong-field regime where ωcτ > 1 (this regime is not easily accessible in metal nanostructures because of the typically short scattering time). In such strong fields only the diffuson contributions to the conductivity corrections survive. According to Houghton et al.215 and Girvin et al.,216 the diffuson does not modify the off-diagonal elements of the conductivity tensor, but only the diagonal elements