The $a$-axis, temperature-dependent electrical resistivity of high-purity, stoichiometric Ti${\mathrm{S}}_2$ is proportional to $T^2$ from at least 10 to 400 K. This unique behavior is apparently caused by electron-electron scattering.

• Received 15 October 1975

DOI:https://doi.org/10.1103/PhysRevLett.35.1786