Superfluid density and energy gap function of superconducting PrPt&lt;sub&gt;4&lt;/sub&gt;Ge&lt;sub&gt;12&lt;/sub&gt;

Maisuradze, A.; Nicklas, M.; Gumeniuk, R.; Baines, C.; Schnelle, W.; Rosner, H.; Leithe-Jasper, A.; Grin, Yu.; Khasanov, R.

doi:10.1103/PhysRevLett.103.147002

Superfluid density and energy gap function of superconducting PrPt₄Ge₁₂

Maisuradze A, Nicklas M, Gumeniuk R, Baines C, Schnelle W, Rosner H, Leithe-Jasper A, Grin Y & Khasanov R

Citation

Maisuradze, A., Nicklas, M., Gumeniuk, R., Baines, C., Schnelle, W., Rosner, H., … Khasanov, R. (2009). Superfluid density and energy gap function of superconducting PrPt₄Ge₁₂. Physical Review Letters, 103(14), 147002 (4 pp.). https://doi.org/10.1103/PhysRevLett.103.147002

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:17464

The filled skutterudite superconductor PrPt₄Ge₁₂ was studied in muon-spin rotation (μSR), specific heat, and electrical resistivity experiments. The continuous increase of the superfluid density with decreasing temperature and the dependence of the magnetic penetration depth λ on the magnetic field obtained by means of μSR, as well as the observation of a T³ dependence of the electronic specific heat indicate the presence of pointlike nodes in the superconducting energy gap. The gap and the specific heat are found to be well described by two models with point nodes, similar to results obtained for the unconventional heavy fermion skutterudite superconductor PrOs₄Sb₁₂.