Magnetic fluctuations in pair density wave superconductors

Abstract

Pair density wave superconductivity constitutes a novel electronic condensate proposed to be realized in certain unconventional superconductors. Establishing its potential existence is important for our fundamental understanding of superconductivity in correlated materials. Here we compute the dynamical magnetic susceptibility in the presence of a pair density wave ordered state, and study its fingerprints on the spin-wave spectrum including the neutron resonance. In contrast to the standard case of d-wave superconductivity, we show that the pair density wave phase exhibits neither a spin-gap nor a magnetic resonance peak, in agreement with a recent neutron scattering experiment on underdoped La${}_{1.905}$Ba${}_{0.095}$CuO${}_4$ [Z. Xu et al., Phys. Rev. Lett. 113, 177002 (2014)].

5 pages, 6 figures + 3 page supplementary

References in corpus (15)

• Theory of Intertwined Orders in High Temperature Superconductors
• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La(1.875)Ba(0.125)CuO(4)
• Dynamical layer decoupling in a stripe-ordered, high T_c superconductor
• Dislocations and vortices in pair density wave superconductors
• Fractional excitations in the square-lattice quantum antiferromagnet
• Theory of the striped superconductor
• Coexistence of charge-density-wave and pair-density-wave orders in underdoped cuprates
• Unidirectional d-wave superconducting domains in the two-dimensional t-J model
• Interplay between pair-density-wave and charge-density-wave orders in underdoped cuprates
• Pseudogap, charge order, and pairing density wave at the hot spots in cuprate superconductors
• Spectral signatures of modulated d-wave superconducting phases
• Disorder-induced freezing of dynamical spin fluctuations in underdoped cuprates
• Renormalization group analysis of the pair-density-wave and charge order within the fermionic hot-spot model for cuprate superconductors
• Magnetic Excitations of Stripes and Checkerboards in the Cuprates

Cited by in corpus (7)

• Cuprate superconductors as viewed through a striped lens
• Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta${}_4$Pd${}_3$Te${}_{16}$
• Distinct nature of static and dynamic magnetic stripes in cuprate superconductors
• Competing magnetic states on the surface of multilayer ABC-stacked graphene
• Nature of the magnetic stripes in fully oxygenated La${}_2$CuO${}_{4+y}$
• Gradual emergence of superconductivity in underdoped LSCO
• Variational Monte Carlo study of spin dynamics in underdoped cuprates