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Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5

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arxiv 0804.0225 v1 pith:UCULQO2I submitted 2008-04-01 cond-mat.str-el cond-mat.supr-con

Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5

Rongwei Hu , Y. Lee , J. Hudis , V. F. Mitrovic , C. Petrovic This is my paper
classification cond-mat.str-el cond-mat.supr-con
keywords magneticsuperconductivitycompositionfieldmagnetismnd1-xcexcoin5orderrange
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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