Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5

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.

7 pages, 7 figures. Physical Review B in press

References in corpus (4)

• "Deconfined" quantum critical points
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Reversible Tuning of the Heavy Fermion Ground State in CeCoIn${}_5$
• Incoherent non-Fermi liquid scattering in a Kondo lattice

Cited by in corpus (6)

• Evolution of the superconducting energy gap structure concomitant with Fermi surface reconstruction in the heavy-fermion superconductor CeCoIn5
• Resolution of the discrepancy between the variation of the physical properties of Ce1-xYbxCoIn5 single crystals and thin films with Yb composition
• Observation of a new field-induced phase transition and its concomitant quantum critical fluctuations in CeCo(In${}_{1-x}$Zn${}_x$)${}_5$
• Superconductivity and non-Fermi-liquid behavior in the heavy-fermion compound CeCo${}_{1-x}$Ni${}_x$In${}_5$
• Impurity-induced magnetic droplet in unconventional superconductors near magnetic instability: Application to Nd doped $\mathbf{CeCoI}{\mathbf{n}}_5$
• Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5