Spin Resonance and Magnetic Order in an Unconventional Superconductor

Abstract

Unconventional superconductivity in many materials is believed to be mediated by magnetic fluctuations. It is an open question how magnetic order can emerge from a superconducting condensate and how it competes with the magnetic spin resonance in unconventional superconductors. Here we study a model d-wave superconductor that develops spin-density wave order, and find that the spin resonance is unaffected by the onset of static magnetic order. This result suggests a scenario, in which the resonance in Nd0.05Ce0.95CoIn5 is a longitudinal mode with fluctuating moments along the ordered magnetic moments.

References in corpus (25)

• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
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• Superconducting phases of f-electron compounds
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• The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors
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• Field-Induced Spin-Exciton Condensation in dx2-y2-wave Superconducting CeCoIn5
• Magnetic order in Ce0.95Nd0.05CoIn5: the Q-phase at zero magnetic field
• Theory of magnetic excitons in the heavy-fermion superconductor $UP{d}_{2}A{l}_3$
• Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5
• Spin excitations in layered antiferromagnetic metals and superconductors
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• Double magnetic resonance and spin anisotropy in Fe-based superconductors due to static and fluctuating antiferromagnetic orders
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• Ising incommensurate spin resonance of CeCoIn${}_5$: a dynamical precursor of the Q-phase

Cited by in corpus (9)

• Feedback of superconductivity on the magnetic excitation spectrum of UTe${}_2$
• From Ising resonant fluctuations to static uniaxial order in antiferromagnetic and weakly superconducting CeCo(In${}_{1-x}$Hg${}_x$)${}_5$ ($x$=0.01)
• Evolution of Magnetic Order from the Localized to the Itinerant Limit
• Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5
• Fermi surface reconstruction and dimensional topology change in Nd-doped CeCoIn${}_5$
• Impurity-induced magnetic droplet in unconventional superconductors near magnetic instability: Application to Nd doped $\mathbf{CeCoI}{\mathbf{n}}_5$
• Dynamic Competition between Cooper-Pair and Spin-Density-Wave Condensation
• Carrier-doping effect and anomalous transport properties in Ni-doped CeCoIn5 investigated by Hall resistivity measurements
• Distinct domain switching in Nd0.05Ce0.95CoIn5 at low and high fields