Switching of magnetic domains reveals evidence for spatially inhomogeneous superconductivity

Abstract

The interplay of magnetic and charge fluctuations can lead to quantum phases with exceptional electronic properties. A case in point is magnetically-driven superconductivity, where magnetic correlations fundamentally affect the underlying symmetry and generate new physical properties. The superconducting wave-function in most known magnetic superconductors does not break translational symmetry. However, it has been predicted that modulated triplet p-wave superconductivity occurs in singlet d-wave superconductors with spin-density wave (SDW) order. Here we report evidence for the presence of a spatially inhomogeneous p-wave Cooper pair-density wave (PDW) in CeCoIn5. We show that the SDW domains can be switched completely by a tiny change of the magnetic field direction, which is naturally explained by the presence of triplet superconductivity. Further, the Q-phase emerges in a common magneto-superconducting quantum critical point. The Q-phase of CeCoIn5 thus represents an example where spatially modulated superconductivity is associated with SDW order.

References in corpus (3)

• Spin resonance in the d-wave superconductor CeCoIn5
• Observation of Spin Susceptibility Enhancement in the Possible FFLO State in CeCoIn${}_5$
• Inherent spin density wave instability by vortices in superconductors with strong Pauli effects

Cited by in corpus (22)

• Unconventional Superconductivity
• Robust Upward Dispersion of the Neutron Spin Resonance in the Heavy Fermion Superconductor Ce${}_{1-x}$Yb${}_x$CoIn${}_5$
• Spatially Modulated Superfluid State in Two-Dimensional ${}^4$He Films
• Observation of the in-plane magnetic field-induced phase transitions in FeSe
• Antiferromagnetic Order oriented by Fulde-Ferrell-Larkin-Ovchinnikov Superconducting Order
• Nature of the spin resonance mode in CeCoIn${}_5$
• Single domain stripe order in a high-temperature superconductor
• Superfluid density and Berezinskii-Kosterlitz-Thouless transition of a spin-orbit coupled Fulde-Ferrell superfluid
• Multiple superconducting phases in heavy-fermion metals
• Synthetic-gauge-field-induced resonances and Fulde-Ferrell-Larkin-Ovchinnikov states in a one-dimensional optical lattice
• Magnetic Order in the 2D Heavy-Fermion System CePt2In7 studied by muSR
• Unconventional superconductivity of an altermagnetic metal: Polarized BCS and inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov states
• Possible Triplet Superconducting Order in Magnetic Superconducting Phase induced by Paramagnetic Pair-Breaking
• Microscopic Eilenberger theory of Fulde-Ferrell-Larkin-Ovchinnikov states in the presence of vortices
• Possible Field-Temperature Phase Diagrams of Two-Band Superconductors with Paramagnetic Pair-Breaking
• Spin susceptibility of Andreev bound states
• Pauli limited d-wave superconductors: Quantum breached pair phase and thermal transitions
• Switching dynamics of the spin density wave in superconducting CeCoIn5
• Gapless Higgs Mode in the Fulde-Ferrell-Larkin-Ovchinnikov State of a Superconductor
• Impurity-induced magnetic droplet in unconventional superconductors near magnetic instability: Application to Nd doped $\mathbf{CeCoI}{\mathbf{n}}_5$
• Inverse melting and intertwined orders in PrCuSb${}_2$
• Distinct domain switching in Nd0.05Ce0.95CoIn5 at low and high fields