Nature of the Magnetic Order in the Charge-Ordered Cuprate La₁.₄₈Nd₀.₄Sr₀.₁₂CuO₄

الأصل · EN

Using polarized neutron scattering we establish that the magnetic order in La₁.₄₈Nd₀.₄Sr₀.₁₂CuO₄ is either (i) one dimensionally modulated and collinear, consistent with the stripe model or (ii) two dimensionally modulated with a novel noncollinear structure. The measurements rule out a number of alternative models characterized by 2D electronic order or 1D helical spin order. The low-energy spin excitations are found to be primarily transversely polarized relative to the stripe ordered state, consistent with conventional spin waves.