Low-Energy Spin Fluctuations in La_<2-x>Sr_xCU_<1-y>Zn_yO_4 (x=0.14, y=0.012)

概要

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Neutron scattering experiments have been performed to study the dynamic spin properties of single-crystal La_<1.86>Sr_<0.14>Cu_<0.988>Zn_<0.012>O_4 (T_C=16K). The width of S (Q, ω) in momentum space decreases at low ω and at low temperatures. The intensity at low energies at the incommensurate peak position (π(1-δ), π)) shows a broad maximum as a function of temperature around the superconducting transition temperature T_C. This behavior is qualitatively similar to that observed by Thurston et al. in La_<1.85>Sr_<0.15>CuO_4 (T_C=33K).
社団法人日本物理学会の論文
1993-02-15