Anomalous low-temperature specific heat of Fe2-xV1+xAl (x=0; 0.1) alloys

Abstract

The low-temperature specific heat of stoichiometric and off-stoichiometric Fe2-xV1+xAl (x 0; 0.1) Heusler alloys was measured in the temperature interval from 1.8 to 12 K. We report on specific features in the low-temperature heat capacity, which reflect the scattering of the current carriers by magnetic defects in both alloys and the existence of a narrow pseudogap in the V-enriched alloy.