CeCoIn5 - a quantum critical superfluid

Abstract

We have made the first complete measurements of the London penetration depth $\lambda (T)$ of CeCoIn5, a quantum-critical metal where superconductivity arises from a non-Fermi-liquid normal state. Using a novel tunnel diode oscillator designed to avoid spurious contributions to $\lambda (T)$, we have established the existence of intrinsic and anomalous power-law behaviour at low temperature. A systematic analysis raises the possibility that the unusual observations are due to an extension of quantum criticality into the superconducting state.

5 pages, 3 figures

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Cited by in corpus (33)

• Superconducting phases of f-electron compounds
• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Magnetic Penetration Depth in Unconventional Superconductors
• Field-Induced Quantum Critical Point in CeCoIn5
• Nodal Structure of Unconventional Superconductors Probed by the Angle Resolved Thermal Transport Measurements
• Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}
• From Kondo Lattices to Kondo Superlattices
• Field Dependent Coherence Length in the Superclean, High-Kappa Superconductor CeCoIn5
• Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy
• Evolution of the superconducting energy gap structure concomitant with Fermi surface reconstruction in the heavy-fermion superconductor CeCoIn5
• Anomalous superfluid density in quantum critical superconductors
• Electronic tuning and uniform superconductivity in CeCoIn5
• Phenomenology of a-axis and b-axis charge dynamics from microwave spectroscopy of highly ordered YBa2Cu3O6.50 and YBa2Cu3O6.993
• Effect of magnetic criticality and Fermi-surface topology on the magnetic penetration depth
• Observations of Pauli Paramagnetic Effects on the Flux Line Lattice in CeCoIn5
• Field Dependence of the Ground State in the Exotic Superconductor CeCoIn${}_5$: a Nuclear Magnetic Resonance Investigation
• Evidence for Fully Gapped Strong Coupling S-wave Superconductivity in Bi4O4S3
• Ambient-pressure bulk superconductivity deep in the magnetic state of CeRhIn5
• Anomalous Scaling of the Penetration Depth in Nodal Superconductors
• Gapless Fermi Surfaces in Superconducting CeCoIn5?
• Angular Dependent Torque Measurements on CeCoIn${}_5$ Single Crystals
• Field-angle-resolved anisotropy in superconducting CeCoIn5 using realistic Fermi surfaces
• Local characterization of a heavy-fermion superconductor via sub-Kelvin magnetic force microscopy
• Observation of the Non-linear Meissner Effect
• Strong pressure dependence of the magnetic penetration depth in single crystals of the heavy fermion superconductor CeCoIn5 studied by muon spin rotation
• Renormalizations in unconventional superconducting states of Ce${}_{1-x}$Yb${}_x$CoIn${}_5$
• Superfluid response in heavy fermion superconductors
• Josephson effect in $CeCoI{n}_5$ microbridges as seen via quantum interferometry
• Tc for heavy Fermion superconductors linked with other physical properties at zero and applied pressure
• Microscopic Insights into London Penetration Depth: Application to CeCoIn${}_5^{}$
• Revealing isotropic abundant low-energy excitations in UTe${}_2$ through complex microwave surface impedance
• Josephson effect in a $CeCoI{n}_5$ microbridge
• Magnetic Quantum Criticality inside the Superconducting State Revealed by Penetration Depth Scaling with Local $T_{\mathrm{c}}$