Weak-field magnetoresistance symmetry in epitaxial films and bulk crystals of p-type SnTe

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Abstract
Nishiyama’s weak‐field magnetoresistance measurements on p‐type SnTe films deviate substantially from the requirements of cubic symmetry. A simple extension of the cubic theory to the case of substrate‐induced tetragonal distortion can account for the measurements. To establish internal consistency of the data with tetragonal symmetry requires an additional measurement which was not, but can easily be, made.