Tuning the pressure-induced superconductivity in Pd-substituted CeRhIn5

Abstract

The effect of substituting Rh in CeRh1-xPdxIn5 with Pd up to x = 0.25 has been studied on single crystals. The crystals have been grown by means of the In self-flux method and characterized by x-ray diffraction and microprobe. The tetragonal HoCoGa5-type of structure and the c/a ratio of the parent compound remains intact by the Pd substitution; the unit cell volume increases by 0.6 % with x = 0.25 of Pd. The low-temperature behavior of resistivity was studied also under hydrostatic pressure up to 2.25 GPa. The Pd substitution for Rh affects the magnetic behavior and the maximum value of the superconducting transition temperature measured at pressures above 2 GPa only negligibly. On the other hand, the results provide evidence that superconductivity in CeRh0.75Pd0.25In5 is induced at significantly lower pressures, i.e. the Pd substitution for Rh shifts the CeRh1-xPdxIn5 system closer to coexistence of magnetism and superconductivity at ambient pressure.

15 pages, 8 figures, 2 tables; accepted for publication in Journal of Physics: Condensed Matter

References in corpus (4)

• Reversible Tuning of the Heavy Fermion Ground State in CeCoIn${}_5$
• The magnitude of the magnetic exchange interaction in the heavy fermion antiferromagnet CeRhIn${}_5$
• Single crystal study of the layered heavy fermion compounds Ce${}_2$PdIn${}_8$, Ce${}_3$PdIn${}_{11}$, Ce${}_2$PtIn${}_8$ and Ce${}_3$PtIn${}_{11}$
• Switching of the magnetic order in CeRhIn${}_{5-x}$Sn${}_x$ in the vicinity of its quantum critical point

Cited by in corpus (1)

• Evolution of magnetism in Pd-substituted Ce${}_2$RhIn${}_8$ single crystals