We studied the newly synthesized quasi-one-dimensional compound Nb4Te17I4. Resistivity measurements confirmed its pseudo-one-dimensional character and photoemission spectroscopy clarified the nature of its valence band states. This polytelluride is a narrow-gap semiconductor at room temperature, with a forbidden gap width of 0.34 eV.
Raffaella Buonsanti, Anna Loiudice, Jan Vávra, Michele Saba
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