A new theory on scattering of electrons due to spiral dislocations

The topologically singular lattice structure around a spiral dislocation scatters electrons in a manner much different from the deformation-potential-scattering. The t-matrix is represented as t(k.k') = tsub(o) sin(ksub(z)/2) exp(+- i theta sub(kk')/2)/sin(theta sub(kk')/2) with the scattering angle theta sub(kk'), the component ksub(z) of the wave vector parallel to the dislocation, and tsub(o) approxmately equal to (Fermi energy). This kind of scattering alone does not cause a perpendicular resistivity, but in a dirty limit a speciffic dislocation resistivity does exist, whose relaxation time per unit length of dislocation is of the order of h/(Fermi energy.) (orig.)