Distinct nature of static and dynamic magnetic stripes in cuprate superconductors

Abstract

We present detailed neutron scattering studies of the static and dynamic stripes in an optimally doped high-temperature superconductor, La${}_2$CuO${}_{4+y}$. We find that the dynamic stripes do not disperse towards the static stripes in the limit of vanishing energy transfer. We conclude that the dynamic stripes observed in neutron scattering experiments are not the Goldstone modes associated with the broken symmetry of the simultaneously observed static stripes, but rather that the signals originate from different domains in the sample. These domains may be related by structural twinning, or may be entirely different phases, where the static stripes in one phase are pinned versions of the dynamic stripes in the other. Our results explain earlier observations of unusual dispersions in underdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x=0.07$) and La${}_{2-x}$Ba${}_x$CuO${}_4$ ($x=0.095$). Our findings are relevant for all compounds exhibiting magnetic stripes, and may thus be a vital part in unveiling the nature of high temperature superconductivity.

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Cited by in corpus (10)

• Charge order at high temperature in cuprate superconductors
• Non-destructive characterisation of dopant spatial distribution in cuprate superconductors
• Nature of the magnetic stripes in fully oxygenated La${}_2$CuO${}_{4+y}$
• Electronic transport through correlated electron systems with nonhomogeneous charge orderings
• Violation of Luttinger's theorem in the simplest doped Mott insulator: Falicov-Kimball model in strong correlation limit
• Evolution of magnetic stripes under uniaxial stress in La${}_{1.885}$Ba${}_{0.115}$CuO${}_4$ studied by neutron scattering
• Anomalous Dispersion of LO Phonons in Oxygen-Doped La${}_{2-x}$Sr${}_x$CuO${}_{4+\delta }$
• Tilted stripes origin in ${\mathrm{La}}_{1.88}{\mathrm{Sr}}_{0.12}{\mathrm{CuO}}_4$ revealed by anisotropic next-nearest neighbor hopping
• Gradual emergence of superconductivity in underdoped LSCO
• McStas (i): Introduction, use, and basic principles for ray-tracing simulations