Abstract
An anomalous negative temperature dependence of electrical resistivity has been observed in alloys with V compositions up to . In particular, the Heusler-type compound is found to be on the verge of magnetic ordering and to exhibit a semiconductorlike behavior with the resistivity reaching at 2 K, in spite of the possession of a clear Fermi cutoff as revealed in photoemission valence-band spectra. A substantial mass enhancement deduced from specific heat measurements suggests that is a possible candidate for a heavy-fermion system.
- Received 7 March 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.1909
©1997 American Physical Society