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VOLUME 26 (1977) | ISSUE 10 | PAGE 703
Experimental confirmation of the gap character of the electronic spectrum of disordered alloys in the region of the structural instability
We discuss the behavior of the magnetoresistance near the mobility thresholds. It is shown that when the Fermi level goes through the energy gap, the magnetoresistance reverses sign. Measurements were made of the magnetoresistance in the alloy system Ti^-Cr,,; it is shown that the electron spectrum of this system has, in the region of the structural instability, a strong mobility singularity of the gap type. It is proposed that such a singularity is possessed by all binary alloys based on Ti with cubic transition metals. It is proposed to use the magnetoresistance to measure the gap parameter in those cases when this cannot be done by direct methods.