Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2

Details Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2 Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2

1999-04-25

arxiv.org/abs/cond-mat/9904357v1

Phys. Rev. B 01 January 2000

Physics

Condensed Matter

Superconductivity

REVTeX, 4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.61.R854

Stripe order in La{2-x}Sr{x}NiO4 beyond x = 1/3 was studied with neutron scattering technique. At low temperatures, all the samples exhibit hole stripe order. Incommensurability \epsilon of the stripe order is approximately linear in the hole concentration n_h = x + 2\delta up to x = 1/2, where \delta denotes the off-stoichiometry of oxygen atoms. The charge and spin ordering temperatures exhibit maxima at n_h = 1/3, and both decrease beyond n_h > 1/3. For 1/3 < n_h < 1/2, the stripe ordering consists of the mixture of the \epsilon = 1/3 stripe order and the n_h = 1/2 charge/spin order.

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