Low energy, quasi-one-dimensional, spin dynamics in charge-ordered La(2-x)Sr(x)NiO(4)

Abstract

The low energy spin excitations of La(2-x)Sr(x)NiO(4), x = 0.275 and 1/3, have been investigated by unpolarized- and polarized-inelastic neutron scattering from single crystals. A pattern of magnetic diffuse scattering is observed in both compositions, and is consistent with quasi-one-dimensional AFM spin correlations along the charge stripes. Analysis of the energy lineshape for x = 1/3 indicates that the diffuse scattering is inelastic with a characteristic energy of 1.40 +/- 0.07 meV. There is no discernible difference between the diffuse scattering from x = 0.275 and x = 1/3, suggesting that it is an intrinsic property of the charge stripes.

7 pages, 7 figures

References in corpus (13)

• Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2
• Spin dynamics in stripe-ordered La5/3Sr1/3NiO4
• High-Energy Spin Dynamics in La${}_{1.69}$Sr${}_{0.31}$NiO${}_4$
• Weak ferromagnetic spin and charge stripe order in La[sub 5/3]Sr[sub 1/3]NiO[sub 4]
• Spin correlations among the charge carriers in an ordered stripe phase
• Ordering Process and Its Hole Concentration Dependence of the Stripe Order in La{2-x}Sr{x}NiO{4}
• Stripe Conductivity in La(1.775)Sr(0.225)NiO(4)
• Stripe Order and Magnetic Transitions in La(2-x)Sr(x)NiO(4)
• Spin Dynamics of Half-Doped La3/2Sr1/2NiO4
• Magnetism of Stripe-Ordered La_(5/3)Sr_(1/3)NiO_4
• Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4
• The Temperature Evolution of the Out-of-Plane Correlation Lengths of Charge-Stripe Ordered La(1.725)Sr(0.275)NiO(4)
• Pairing and Density Correlations of Stripe Electrons in a Two-Dimensional Antiferromagnet

Cited by in corpus (4)

• Neutron scattering studies on stripe phases in non-cuprate materials
• Magnetic excitations of the charge stripe electrons below half doping in La(2-x)Sr(x)NiO4, x = 0.45 and x = 0.4
• Stability of charge-stripe ordered La2-xSrxNiO4+delta at one third doping
• Evidence of Magnetic Correlations Among the Charge Stripe Electrons of Charge-Stripe Ordered La2NiO4.11