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arXiv · 1901.06871

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

Debarchan Das·Daniel Gnida·Łukasz Bochenek·Andriy Rudenko·Marek Daszkiewicz·Dariusz Kaczorowski
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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.

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Debarchan Das, Daniel Gnida, Łukasz Bochenek, Andriy Rudenko, Marek Daszkiewicz, Dariusz Kaczorowski. 2019-01-21. Magnetic field driven complex phase diagram of antiferromagnetic heavy-fermion superconductor Ce$_3$PtIn$_{11}$. https://doi.org/10.1038/s41598-018-34991-7

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