Normal-state and superconducting properties of HfV2 |
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| Authors: | B Lüthi M Herrmann W Assmus H Schmidt H Rietschel H Wühl U Gottwick G Sparn F Steglich |
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| Institution: | (1) Physikalisches Institut, Universität Frankfurt, Robert-Mayer-Strasse 2-4, D-6000 Frankfurt am Main, Federal Republic of Germany;(2) Institut für Angewandte Kernphysik, Kernforschungszentrum Karlsruhe und Universität Karlsruhe, Postfach 3640, D-7500 Karlsruhe 1, Federal Republic of Germany;(3) Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstrasse 2, D-6100 Darmstadt, Federal Republic of Germany |
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| Abstract: | We present experimental results for the low-temperature specific heat, electrical resistivity, elastic constants, ultrasonic attenuation and thermal conductivity of theC 15 Laves phase HfV2 for both polycrystalline and single crystal samples. BelowT
c
=9 K, the temperature dependence of the specific heat can roughly be approximated by aT
3 law over a large temperature range. This may be explained with strong coupling effects in consistence with the high value for  C/ T
c
=1.9. Heat transport appears dominated by the known phonon contribution also belowT
c
. There is no electronic contribution to the ultrasonic attenuation in HfV2.Dedicated to B. Mühlschlegel on the occasion of his 60th birthday |
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