Diagonal and Collinear Incommensurate Spin Structures in underdoped La${}_{2-x}$Ba${}_x$CuO${}_4$

Abstract

We have studied incommensurate spin ordering in single crystal underdoped La_{2-x}Ba_{x}CuO_{4} with x~0.08, 0.05 and 0.025 using neutron scattering techniques. Static incommensurate magnetic order is observed in the La_{2-x}Ba_{x}CuO_{4} (x=0.05 and 0.025) compounds with ordering wavevectors which are rotated by 45 degree about the commensurate (0.5,0.5,0) position, with respect to that in the superconducting x=0.08 material. These spin modulations are one dimensional in the x=0.05 and 0.025 samples, with ordering wavevectors lying along the orthorhombic b* direction. Such a rotation in the orientation of the static spin ordering as a function of increasing Ba doping, from diagonal to collinear, is roughly coincident with the transition from an insulating to a superconducting ground state and is similar to that observed in the related La_{2-x}Sr_{x}CuO_{4} system. This phenomenon is therefore a generic property of underdoped La-214 cuprates.

5 pages, 4 figures, submitted to PRL

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Cited by in corpus (16)

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• Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
• Determination of the optical properties of La{2-x}Ba{x}CuO{4} for several dopings, including the anomalous x=1/8 phase
• Parallel Spin Stripes and Their Coexistance with Superconducting Ground States at Optimal and High Doping in La${}_{1.6-x}$Nd${}_{0.4}$Sr${}_x$CuO${}_4$
• Heavily Hydride-ion-doped 1111-type Iron-based Superconductors: Synthesis, Physical Properties and Electronic Structure
• Two Dimensional Incommensurate and Three Dimensional Commensurate Magnetic Order and Fluctuations in $L{a}_{2-x}B{a}_{x}Cu{O}_4$
• Angle-Resolved Photoemission from Cuprates with Static Stripes
• Magnetic field resonantly enhanced free spins in underdoped YBa${}_2$Cu${}_3$O${}_{6+x}$
• Neutron Scattering Studies of Spin-Phonon Hybridization and Superconducting Spin-Gaps in High Temperature Superconductor $L{a}_{2-x}(Sr,Ba{)}_{x}Cu{O}_4$
• Multiband responses in high-Tc cuprate superconductors
• Magnetic Field Tuning of Parallel Spin Stripe Order and Fluctuations near the Pseudogap Quantum Critical Point in La${}_{1.36}$Nd${}_{0.4}$Sr${}_{0.24}$CuO${}_4$
• Tilted stripes origin in ${\mathrm{La}}_{1.88}{\mathrm{Sr}}_{0.12}{\mathrm{CuO}}_4$ revealed by anisotropic next-nearest neighbor hopping
• In-plane oxygens in high-temperature superconducting cuprates
• Inhomogeneous Electronic Distribution in High-Tc Cuprates
• Dynamic Parallel Spin Stripes from the 1/8 anomaly to the End of Superconductivity in La${}_{1.6-x}$Nd${}_{0.4}$Sr${}_x$CuO${}_4$
• Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime