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1. Multiband superconductivity in the correlated electron filled skutterudite system ${\text{Pr}}_{1-x}{\text{Ce}}_x{\text{Pt}}_4{\text{Ge}}_{12}$

   https://doi.org/10.1103/PhysRevB.94.144502  

   Singh, Y. P.; Adhikari, R. B.; Zhang, S.; Huang, K.; Yazici, D.; Jeon, I.; Maple, M. B.; Dzero, M.; Almasan, C. C. (October 2016, Physical Review B)
2. Investigation of superconducting and normal-state properties of the filled-skutterudite system ${\text{PrPt}}_4{\text{Ge}}_{12-x}{\text{Sb}}_x$

   https://doi.org/10.1103/PhysRevB.93.104507  

   Jeon, I.; Huang, K.; Yazici, D.; Kanchanavatee, N.; White, B. D.; Ho, P.-C.; Jang, S.; Pouse, N.; Maple, M. B. (March 2016, Physical Review B)
3. Evolution of critical pressure with increasing Fe substitution in the heavy-fermion system ${\text{URu}}_{2-x}{\text{Fe}}_x{\text{Si}}_2$

   https://doi.org/10.1103/PhysRevB.94.085145  

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4. Robust superconductivity and the suppression of charge-density wave in the quasi-skutterudites ${\text{Ca}}_3({\text{Ir}}_{1-x}{\text{Rh}}_x{)}_4{\text{Sn}}_{13}$ single crystals at ambient pressure

   https://doi.org/10.1088/1361-648X/ad5485  

   Krenkel, Elizabeth_H; Tanatar, Makariy_A; Ghimire, Sunil; Joshi, Kamal_R; Chen, Shuzhang; Petrovic, Cedomir; Prozorov, Ruslan (June 2024, Journal of Physics: Condensed Matter)

   Abstract Single crystals of the quasi-skutterudite compounds Ca₃(Ir_1-xRh_x)₄Sn₁₃(3–4–13) were synthesized by flux growth and characterized by x-ray diffraction, energy dispersive x-ray spectroscopy, magnetization, resistivity, and radio frequency magnetic susceptibility techniques. The coexistence and competition between the charge density wave (CDW) and superconductivity was studied by varying the Rh/Ir ratio. The superconducting transition temperature, $T_{\mathrm{c}}$, varies from 7 K in pure Ir (x = 0) to 8.3 K in pure Rh (x = 1). Temperature-dependent electrical resistivity reveals monotonic suppression of the CDW transition temperature,T_CDW(x). The CDW starts in pure Ir,x = 0, atT_CDW≈ 40 K and extrapolates roughly linearly to zero at $x_c\approx$0.53–0.58 under the superconducting dome. Magnetization and transport measurements show a significant influence of CDW on superconducting and normal states. Meissner expulsion is substantially reduced in the CDW region, indicating competition between the CDW and superconductivity. The low-temperature resistivity is higher in the CDW part of the phase diagram, consistent with the reduced density of states due to CDW gapping. Its temperature dependence just above $T_{\mathrm{c}}$shows signs of non-Fermi liquid behavior in a cone-like composition pattern. We conclude that the Ca₃(Ir_1-xRh_x)₄Sn₁₃alloy is a good candidate for a composition-driven quantum critical point at ambient pressure. 

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5. Anomalous strain relaxation and its impact on the valence-driven spin-state/metal-insulator transition in epitaxial ${\left({\mathrm{Pr}}_{1\text{−}y}{\mathrm{Y}}_y\right)}_{1\text{−}x}{\mathrm{Ca}}_x\mathrm{Co}{\mathrm{O}}_{3\text{−}\delta }$

   https://doi.org/10.1103/physrevmaterials.7.024415  

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