Magnetism and superconductivity driven by identical 4$f$ states in a heavy-fermion metal

Abstract

The apparently inimical relationship between magnetism and superconductivity has come under increasing scrutiny in a wide range of material classes, where the free energy landscape conspires to bring them in close proximity to each other. This is particularly the case when these phases microscopically interpenetrate, though the manner in which this can be accomplished remains to be fully comprehended. Here, we present combined measurements of elastic neutron scattering, magnetotransport, and heat capacity on a prototypical heavy fermion system, in which antiferromagnetism and superconductivity are observed. Monitoring the response of these states to the presence of the other, as well as to external thermal and magnetic perturbations, points to the possibility that they emerge from different parts of the Fermi surface. This enables a single 4$f$ state to be both localized and itinerant, thus accounting for the coexistence of magnetism and superconductivity.

4 pages, 4 figures

References in corpus (6)

• Spin resonance in the d-wave superconductor CeCoIn5
• Strength of the Spin-Fluctuation-Mediated Pairing Interaction in a High-Temperature Superconductor
• Reversible Tuning of the Heavy Fermion Ground State in CeCoIn${}_5$
• Interacting Antiferromagnetic Droplets in Quantum Critical CeCoIn_5
• Magnetic structure of Cd-doped CeCoIn5
• Anisotropic effect of Cd and Hg doping on Pauli limited superconductor CeCoIn${}_5$

Cited by in corpus (24)

• A Common Thread: the pairing interaction for the unconventional superconductors
• Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5
• Unconventional Superconductivity from Local Spin Fluctuations in the Kondo Lattice
• Strong magnetic fluctuations in superconducting state of CeCoIn${}_5$
• Hall effect in heavy-fermion metals
• Magnetic order in Ce0.95Nd0.05CoIn5: the Q-phase at zero magnetic field
• Coexistence of antiferromagnetism and superconductivity within t-J model with strong correlations and nonzero spin polarization
• Structural investigations of CeIrIn${}_5$ and CeCoIn${}_5$ on macroscopic and atomic length scales
• Microscopic Evidence of Direct Coupling between Magnetic and Superconducting Order Parameters in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Evolution of ground state wave function in CeCoIn${}_5$ upon Cd or Sn doping
• Crystal and magnetic structure of the superconductor CeNi${}_{0.8}$Bi${}_2$
• Electronic transport and magnetism in the alternating stack of metallic and highly frustrated magnetic layers in Co${}_{1/3}$NbS${}_2$
• Pauli-limited superconductivity and antiferromagnetism in the heavy-fermion compound CeCo(In1-xZnx)5
• Exotic Superconductivity Through Bosons in a Dynamical Cluster Approximation
• Variational cluster approach to superconductivity and magnetism in the Kondo lattice model
• Nonmagnetic impurity resonance states as a test of superconducting pairing symmetry in CeCoIn${}_5$
• Observation of a new field-induced phase transition and its concomitant quantum critical fluctuations in CeCo(In${}_{1-x}$Zn${}_x$)${}_5$
• Impurity-induced magnetic droplet in unconventional superconductors near magnetic instability: Application to Nd doped $\mathbf{CeCoI}{\mathbf{n}}_5$
• Textured Superconductivity in the Presence of a Coexisting Order: Ce115s and Other Heavy-Fermion Compounds
• Phase evolution of Ce-based heavy-fermion superconductors under compression: a combined first-principle and effective-model study
• Magnetic structure of Cd-doped CeIrIn${}_5$
• Correlation and disorder-enhanced nematic spin response in superconductors with weakly broken rotational symmetry
• Universality and unconventional enhancement of flux-flow resistivity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Strong pinning of vortices by antiferromagnetic domain boundaries in CeCo(In${}_{1-x}$Cd${}_x$)${}_5$