Incommensurate magnetic fluctuations in

SW Cheong, G Aeppli, TE Mason, H Mook… - Physical review …, 1991 - APS
SW Cheong, G Aeppli, TE Mason, H Mook, SM Hayden, PC Canfield, Z Fisk, KN Clausen…
Physical review letters, 1991APS
We use inelastic neutron scattering to establish the modulation vectors δ and correlation
lengths for the incommensurate magnetic fluctuations in metallic samples of La 2− x Sr x
CuO 4 with x= 0.075 and 0.14. In notation appropriate for a square lattice where the
magnetic instability in the undoped case occurs at (π, π), the vectors δ are along (π, 0) and
(0, π). The correlation length ξ is larger than the distance between carriers, is weakly
dependent on x, and changes significantly between 12 and 100 K for both compositions.
Abstract
We use inelastic neutron scattering to establish the modulation vectors δ and correlation lengths for the incommensurate magnetic fluctuations in metallic samples of La 2− x Sr x CuO 4 with x= 0.075 and 0.14. In notation appropriate for a square lattice where the magnetic instability in the undoped case occurs at (π, π), the vectors δ are along (π, 0) and (0, π). The correlation length ξ is larger than the distance between carriers, is weakly dependent on x, and changes significantly between 12 and 100 K for both compositions.
American Physical Society
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