Spin fluctuations and superconductivity in Mo3Sb7.
Temperature dependences of the magnetic susceptibility, specific heat, and electrical resistivity have been measured for the Mo(3)Sb(7) compound in the 0.6-350 K range. This compound exhibits bulk superconductivity occurring at 2.25 K and follows the Kadowaki-Woods relation, A/gamma(2)=1.0 x 10(-5) microOmega x cm(K x mol/mJ)(2), as a heavy-fermion system does. We show, from experimental evidence and theoretical argument, that Mo(3)Sb(7) can be classified as a coexistent superconductor-spin fluctuation system. The McMillan equation including paramagnon effects was found to give an accurate estimation of the transition temperature.
Candolfi
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Laboratoire de Physique des Matériaux, Nancy Université, CNRS, Ecole Nationale Supérieure des Mines de Nancy, Parc de Saurupt, 54042 Nancy cedex, France. christophe.candolfi@mines.inpl-nancy.fr
Lenoir
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B
Dauscher
A
A
Bellouard
C
C
Hejtmánek
J
J
Santavá
E
E
Tobola
J
J