Dynamical stripe structure in La_2-xSr_xCuO₄ observed by Raman scattering

2000/10/20 by S. Sugai, Sugai, S., N. Hayamizu +1
Physics and Astronomy · #FOS: Physical sciences #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0010305

10 pages, 5 figures

arxiv created 2000/10/20 · arxiv updated 2009/11/30

Abstract

The dynamical stripe structure relating to the "1/8 problem" was investigated in La_2-xSr_xCuO₄ utilizing the high frequency response of Raman scattering. The split of the two-magnon peak due to the formation of the stripe structure was observed at whole Sr concentration region from x=0.035 to 0.25 at low temperatures. Especially clear split was observed at low carrier concentration region x=0.035 - 0.06 and at x ∼ 1/8. The onset temperatures of these stripe structures are as high as 300-350 K, which are much higher than the temperatures measured by slow response probes.

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