Ru3Sn7: Phonon Reference for Superconducting Mo3Sb7 |
| V.H. Tran and W. Miiller
W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław, Poland |
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| In order to search for phonon reference for dimer-gapped superconducting Mo3Sb7, measurements of specific heat (Cp(T)) and electrical resistivity (ρ(T)) of Ru3Sn7 were performed in the temperature range 2-300 K. The phonon part of Cp(T) and ρ(T) of Ru3Sn7 can satisfactorily be explained describing the spectrum with one Einstein and two Debye modes. We found ΘpE ≈ 100 K, ΘpD1 ≈ 185 K and ΘpD2 ≈298 K. The magnetic specific heat of Mo3Sb7 exhibits a sharp maximum at T*= 50 K, below which follows a gap function. Magnetic resistivity increases as -lnT with decreasing temperature and shows maximum at T*. |
| DOI: 10.12693/APhysPolA.115.83 PACS numbers: 65.40.-b, 72.15.Eb, 74.25.Kc, 74.25.Bt, 72.15.Qm |