Magnetic field driven complex phase diagram of antiferromagnetic heavy-fermion superconductor Ce${}_3$PtIn${}_{11}$

Abstract

We present the results of our comprehensive investigation on the antiferromagnetic heavy-fermion superconductor Ce${}_3$PtIn${}_{11}$ carried out by means of electrical transport, heat capacity and ac magnetic susceptibility measurements, performed on single-crystalline specimens down to 50 mK in external magnetic fields up to 9~T. Our experimental results elucidate a complex magnetic field -- temperature phase diagram which contains both first- and second-order field-induced magnetic transitions and highlights the emergence of field stabilized phases. Remarkably, a prominent metamagnetic transition was found to occur at low temperatures and strong magnetic fields. In turn, the results obtained in the superconducting phase of Ce${}_3$PtIn${}_{11}$ corroborate an unconventional nature of Cooper pairs formed by heavy quasiparticles. The compound is an almost unique example of a heavy fermion system in which superconductivity may coexist microscopically with magnetically ordered state.

12 pages, 7 figures, Published in Scientific Reports

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• Magnetic field driven quantum criticality in antiferromagnetic CePtIn4
• Anisotropic magnetotransport and magnetic phase diagrams of the antiferromagnetic heavy-fermion superconductor Ce${}_3$PdIn${}_{11}$
• Structural and magnetic properties of antiferromagnetic Ce${}_2$IrGa${}_{12}$
• Quantum phase transitions and superconductivity in the pressurized heavy-fermion compound CeCuP2