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Abstract:
Subhalides of Te are compounds of the type Te yX with yges1 and X=Cl,
Br, I. Within this group of compounds the structural building unit of
elemental tellurium-the Te-screw with 3 1 or 3 2 symmetry-is
continuously modified and yields a series of crystal structures from
one-dimensional Te-Te arrangements to a zero-dimensional type. The
authors show qualitatively how the electrical conductivity of these
compounds is correlated to the various crystal structures. Gap energies
are determined from the temperature dependence of the electrical
conductivity.
