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arXiv · 0804.0225

Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5

Rongwei Hu·Y. Lee·J. Hudis·V. F. Mitrovic·C. Petrovic
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Abstract

The Nd1-xCexCoIn5 alloys evolve from local moment magnetism (x = 0) to heavy fermion superconductivity (x =1). Magnetic order is observed over a broad range of x. For a substantial range of x (0.83 <= x <= 0.95) in the temperature - composition phase diagram we find that superconductivity may coexist with spin - density wave magnetic order at the Fermi surface. We show that a delicate balance betwen superconducting and magnetic instabilities can be reversibly tuned by both the Ce/Nd ratio and magnetic field, offering a new and unique model electronic system.

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Rongwei Hu, Y. Lee, J. Hudis, V. F. Mitrovic, C. Petrovic. 2008-04-01. Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5. https://doi.org/10.1103/physrevb.77.165129

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