Electrical transport and specific heat of a Cr+2.2 at% Al single crystal |
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Authors: | HL Alberts ARE Prinsloo AM Strydom |
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Institution: | 1. Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;2. University of Tennessee, Knoxville, TN 37996, USA;3. State University of New York, Stony Brook, NY, USA |
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Abstract: | Electrical resistivity, thermoelectric power and specific heat measurements are reported for a Cr+2.2 at% Al alloy single crystal, having an Al content close to the triple point on the magnetic phase diagram of the Cr–Al alloy system. A weak resistivity component of spin-density-wave origin, not previously observed in alloys near the triple point concentration, is isolated at low temperatures. Its presence is confirmed by the thermoelectric measurements. The specific heat measurements suggest a maximum in the density of states at the Fermi energy for alloy concentrations close to the triple point, a point that appears to be a particular type of critical point for the Cr–Al alloy system. |
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