Eur. Phys. J. B 46, 169-176 (2005)
https://doi.org/10.1140/epjb/e2005-00226-0

Sound wave anomalies in superconducting compounds

¹ Physikalisches Institut, Universität Frankfurt, 60054 Frankfurt, Germany
² Forschungszentrum Rossendorf, 01328 Dresden, Germany

Corresponding author: ^a luethi@physik.uni-frankfurt.de

Received: 18 November 2004
Published online: 19 July 2005

Abstract

Temperature dependence of the elastic constants in the superconducting state is described on the basis of the Ginsburg-Landau theory. This approach shows very general character and allows to describe quantitative renormalization of the elastic constants in the superconducting state for different materials including non-conventional superconductors. Various examples (A-15 compounds, Chevrel compounds, CeRu₂, Ba_0.63K_0.37BiO₃, Yb₃Rh₄Sn₁₃, Ca₃Rh₄Sn₁₃, HfV₂, some heavy fermion compounds and Sr₂RuO₄) are given.