Investigation of the heat capacity and of the superconducting properties of the sulfide Mo6 NaS8
Alekseevskii N.E. , Wolf G. , Dobrovol'skii N.M. , Thiele U.
The heat capacity and the temperature dependence of the critical field of the superconducting molybdenum sulfide Mo6NaS8 was measured. It is shown that, in contrast to Mo5SnS6, the value of Cp/T above the critical temperature deviates little from a linear function of Γ2. We determined the Debye temperature 0D = 118 K, the Sommerfeld constant у = 9.2 X 10"3J/K2 mole, the derivative (dHc2/dT)T= Tc = 12.8kOe/K and the critical field Яс2(0) = 100 kOe.
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![](/ps/1416/article_21485_800_head.png "The heat capacity and the temperature dependence of the critical field of the superconducting molybdenum sulfide Mo<sub>6</sub>NaS<sub>8</sub> was measured. It is shown that, in contrast to Mo<sub>5</sub>SnS<sub>6</sub>, the value of <i>C<sub>p</sub>/T </i>above the critical temperature deviates little from a linear function of Γ<sup>2</sup>. We determined the Debye temperature <i>0<sub>D</sub> </i>= 118 K, the Sommerfeld constant <i>у = </i>9.2 X 10"<sup>3</sup>J/K<sup>2</sup> mole, the derivative <i>(dH<sub>c2</sub>/dT)<sub>T=</sub> <sub>Tc</sub> = </i>12.8kOe/K and the critical field Я<sub>с2</sub>(0) = 100 kOe.")