119Sn and57Fe Mössbauer study of La2−x
Sr
x
CuO4 |
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| Authors: | T Shinjo S Nasu T Mizutani K Shintaku N Hosoito K Matsukuma T Takabatake |
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| Institution: | (1) Institute for Chemical Research, Kyoto University, 611 Uji, Kyoto-fu, Japan;(2) Faculty of Engineering Science, Osaka University, 560 Toyonaka, Japan;(3) Faculty of Integrated Arts and Sciences, Hiroshima University, 730 Hiroshima, Japan |
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| Abstract: | Mössbauer absorption measurements were carried out for119Sn and57Fe impurities in La2CuO4, La1.85Sr0.15CuO4 and La1.6Sr0.4CuO4. For all cases,57Fe spectra at 4.2 K show magnetic hyperfine splittings. On the other hand, a magnetic hyperfine field at Sn nucleus is observed only in the case of La1.85Sr0.15CuO4. The results indicate that the Cu magnetic spins are collectively fluctuating in the superconducting sample. |
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