2017/11/22 by Z. Ren, Zhi Ren, G. W. Scheerer +6 · 9 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Delocalized electron #Electrical resistivity and conductivity #Electron #Heavy fermion #Iron-based superconductors research #Magnetic Properties of Alloys #Magnetic susceptibility #Order (exchange) #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum critical point #Quantum mechanics #Quantum phase transition #Rare-earth and actinide compounds #Strongly correlated material #Superconductivity #Valence (chemistry) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.96.184524
published in Physical review. B./Physical review. B 96(18), 184524-1-184524-5 (American Physical Society) · 6 pages, 6 figures, to appear in PRB
arxiv created 2017/11/22 · openalex publication_date 2017/11/28 · arxiv updated 2017/11/30 · openalex created_date 2017/12/04 · openalex updated_date 2026/08/05
We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p\text\ensuremath-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p\text\ensuremath-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.