Strong magnetic fluctuations in superconducting state of CeCoIn${}_5$

Abstract

We show results on the vortex core dissipation through current-voltage measurements under applied pressure and magnetic field in the superconducting phase of CeCoIn${}_5$. We find that as soon as the system becomes superconducting, the vortex core resistivity increases sharply as the temperature and magnetic field decrease. The sharp increase in flux flow resistivity is due to quasiparticle scattering on critical antiferromagnetic fluctuations. The strength of magnetic fluctuations below the superconducting transition suggests that magnetism is complimentary to superconductivity and therefore must be considered in order to fully account for the low-temperature properties of CeCoIn${}_5$.

arXiv comment7 pages, 6 figures

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• Hall effect in heavy-fermion metals
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• Structural investigations of CeIrIn${}_5$ and CeCoIn${}_5$ on macroscopic and atomic length scales
• Evolution of ground state wave function in CeCoIn${}_5$ upon Cd or Sn doping
• d-wave superconductivity in the frustrated two-dimensional periodic Anderson model
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Filamentary superconductivity across the phase diagram of Ba(Fe,Co)${}_2$As${}_2$
• Interplay of the spin density wave and a possible Fulde-Ferrell-Larkin-Ovchinnikov state in $\mathrm{CeCoI}{\mathrm{n}}_5$ in rotating magnetic field
• Impurity-induced antiferromagnetic order in Pauli-limited nodal superconductors: application to heavy fermion CeCoIn5
• From local moment to mixed-valence regime in Ce(1-x)Yb(x)CoIn5 alloys
• Differential Conductance and Defect States in the Heavy Fermion Superconductor CeCoIn${}_5$
• Fulde-Ferrell-Larkin-Ovchinnikov state in strongly correlated d-wave superconductors
• Impurity-induced magnetic droplet in unconventional superconductors near magnetic instability: Application to Nd doped $\mathbf{CeCoI}{\mathbf{n}}_5$
• Renormalizations in unconventional superconducting states of Ce${}_{1-x}$Yb${}_x$CoIn${}_5$
• Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5
• Quantum criticality in Ce${}_{1-x}$Sm${}_x$CoIn${}_5$
• Quantum criticality and superconducting pairing in Ce(1-x)Yb(x)CoIn5 alloys
• Unconventional superconductivity in the strong-coupling limit for the heavy fermion system CeCoIn${}_5$
• Zero-Field Quantum Critical Point in Ce${}_{0.91}$Yb${}_{0.09}$CoIn${}_5$
• Spatial modulation of a unitary impurity-induced resonances in superconducting CeCoIn${}_5$
• Pressure studies of the quantum critical alloy Ce(0.93)Yb(0.07)CoIn5
• Universality and unconventional enhancement of flux-flow resistivity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Relationship between critical current and flux-flow resistivity in the mixed state of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$