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Wakimoto, Shuichi; Kakurai, Kazuhisa; Matsuda, Masaaki; Takeda, Masayasu; Fujita, Masaki*; Yamada, Kazuyoshi*; Gu, G.*; Tranquada, J. M.*; Birgeneau, R. J.*; Zhang, H.*
no journal, ,
Polarized neutron scattering exaperiments have been performed on LaBaCuO and LaSrCuO with intent to elucidate a possible effects of stripe structure to the spin dynamics. Low energy ( meV) data demonstratre that in the former sample, which has a well-ordered stripe state with Cu spins lying in the CuO plane at 10 K, spins fluctuate only in the plane. On the other hand, the latter sample, which has very weak stripe order, shows isotropic spin fluctuation. This implies that low energy magnetic excitations are stringly affected by the stripe order.