Journal of the Physical Society of Japan · 1989 · 57 citations · 2 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMagnetic MaterialsSolid State PhysicsAntiferromagnetismExchange InteractionsMagnetic Properties Of SolidsMagnetism In SolidsPhase TransitionsSuperconducting MaterialsAntiferromagnetic OrderAntiferromagnetic OrderingMagnetic Phase TransitionsMagnetic ScatteringSpin FluctuationsSpin OrderingSpin ReorientationTwo-dimensional Magnetism
A neutron scattering study on Nd 2 CuO 4 , a mother material of the electron-doped superconductor (Nd 1- x Ce x )CuO 4- y , was carried out. Reentrant magnetic phase transitions associated with spin reorientation of antiferromagnetic ordering were observed. La 2 NiO 4 -type order was stabilized in the range 80 K\({\lesssim}T{\lesssim}\)250 K and at \(T{\lesssim}40\) K. Between 40 K\({\lesssim}T{\lesssim}\)80 K, La 2 CuO 4 -type order was realized. Diffuse scattering due to the two-dimensional spin fluctuation was also observed at around T ≃250 K.
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A superconducting copper oxide compound with electrons as the charge carriers
Y. Tokura, H. Takagi, S. Uchida · Nature · 1989 · 1.8K citations
Nature of the charge carriers in electron-doped copper oxide superconductors
J. M. Tranquada, S. M. Heald, A. R. Moodenbaugh et al. · Nature · 1989 · 245 citations