2005/11/04 by N. A. Frederick, T. A. Sayles, Frederick, N. A. +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Magnetic Properties of Alloys #Rare-earth and actinide compounds #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0511130
6 figures, submitted to Phys. Rev. B
arxiv created 2005/11/04 · openalex publication_date 2005/11/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The double superconducting transition in PrOs4Sb12, first observed in specific heat C(T) measurements of single crystal samples, is the subject of an in-depth study. The double superconducting transitions of a batch of single crystals were measured before and after they were annealed for 5 days at 500∘C, with no observed change. C(T) measurements near Tc for PrOs4Sb12 in several magnetic fields are also presented, detailing the evolution of the double transition up to 1 T. Samples of Pr(Os1-xRux)4Sb12 with 0.01 ≤ x ≤ 0.04 also appear to display a double superconducting transition in specific heat. In addition, samples with the smallest Ru concentration measured (x=0.01) may even display a different type of superconductivity than pure PrOs4Sb12 (x=0).