Abstract
57Fe- and119Sn Mössbauer effect studies on 0.5 at %57Fe (or119Sn) dopednon-superconducting La1.25Nd0.6Sr0.15CuO4 in the temperature region 300 K ≧T≧4.2 K reveal an onset of local magnetic ordering occurring atT m ≅32 K for both57Fe—as well as119Sn-doped samples. The local magnetic ordering shows up in the presence of a very large transferred hyperfine field ofB thf ≅11.0(5)T at the119Sn nuclei. Since such a large field is neither present in antiferromagnetic La2CuO4, nor in superconducting La1.85Sr0.15CuO4 or overdoped La2−xSrxCuO4 (x=0.4), the occurrence of such local spin correlations seems to be a signature of the non-superconducting low temperature tetragonal phase of La1.25Nd0.6Sr0.15CuO4.
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References
Büchner, B., Braden, M., Cramm, M., Schnelle, W., Hoffels, O., Braunisch, W., Heger, G., Wohlleben, D.: Physica C185–189, 903 (1991)
Büchner, B., Cramm, M., Braden, M., Braunisch, W., Hoffels, O., Schnelle, W., Müller, R., Freimuth, A., Schlabitz, W., Heger, G., Khomskii, D.I., Wohlleben, D.: Europhys. Lett. 21 (9), 953 (1993)
Büchner, B.: Doctoral thesis, Universität zu Köln 1993 (unpublished)
Shamoto, S., Kiyokura, T., Sato, M., Kakurai, K., Nakamura, Y., Uchida, S.: Physica C203, 7 (1992)
Imbert, P., Jehanno, G.: Hyperfine Int.47–48, 556 (1989)
Baggio-Saitovitch, E., Scorzelli, R.B., Souza Azevedo, I., dos Santos, C.A., Litterst, F.J.: Physica C166, 518 (1990)
Shinjo, T., Mizutani, T., Hosoito, N., Kusuda, T., Takabatake, T., Matsukama, K., Fujii, H.: Physica C159, 869 (1989)
Abd-Elmeguid, M.M., Olejniczak, J., Sauer, Ch., Zinn, W.: Solid State Commun.83, 295 (1992)
It has been established (see [10] and [11]) that a fit withtwo quadrupole doublets, corresponding to two slightly different Fe-sites, is the correct one for57Fe-doped La1.85Sr0.15CuO5 The same seems to be true for57Fe-doped La1.25Nd0.6Sr0.15CuO4. This can be seen in the 4.2 K-57Fe-MB spectrum (Fig. 3b), where the two Fe-site fit definitely is the correct one (the one Fe-site fit gives wrong line intensities) However, for the purpose of this paper, the fitting of the hightemperature spectra with one quadrupole doublet, which gives the average hf parameters, certainly is good enough
Baggio-Saitovitch, E., Souza Azevedo, I., Scorzelli, R.B., de Cunha, S.F., Sampaio, L.C., Saitovitch, H., Guimaraes, A.P.: Progress in high temperature superconductivity. Vol. 9, pp. 368. Singapore: World Scientific 1988
Imbert, P., Jehanno, G.: Hyperfine Ints.55, 1307 (1990)
Büchner, B., Cramm, M., Braden, M., Braunisch, W., Hoffels, O., Schnelle, W., Harnischmacher, J., Borowski, R., Gruetz, A., Heymer, B., Hohn, C., Müller, R., Maldonado, O., Freimuth, A., Schlabitz, W., Heger, G., Khomskii, D.I., Wohlleben, D.: In: Physics and material science of high temperature superconductors, II. Nato ASI Series, Vol. 209, Kossowski, R., Raveau, B., Wohlleben, D., Patapis, S.K. (eds), p. 349. Dordrecht: Kluwer 1992
Kumagai, K., Watanabe, I., Kawano, K., Matoba, H., Nishiyama, K., Nagamine, K., Wada, N., Okaji, M., Nara, K.: Physic C185–189, 913 (1991); Watanabe, I., Kawano, K., Kumage, K., Nishiyama, K., Nagamine, K.: J. Phys. Soc. Jpn.61, 300 (1992)
Luke, G.M., Le, L.P., Sternlieb, B.J., Wu, W.D., Uemura, Y.L., Brewer, J.H., Riseman, T.M., Ishibashi, S., Uchida, S.: Physic. C185–189 1175 (1991)
Axe, J.D., Moudden, A.M., Hohlwein, D., Cox, D.E., Mohanty, K.M., Moodenbaugh, A.R., Xu, Y.: Phys. Rev. Lett.62, 275: (1989)
Kumagai, K., Matoba, H., Wada, N., Okaji, M., Nara, K.: J. Phys. Soc. Jpn.60, 1448 (1991); Kumagai, K., Watanabe, I., Kawano, K., Matoba, H., Nishiyama, K., Nagamine, K., Wada, N., Okaji, M., Nara, K.: Physica C185–189, 913 (1991)
Pasternak, M.P., Taylor, R.D.: Solid State Commun.,73, 33 (1990)
Takagi, H., Cava, R.J., Marezio, M., Batlogg, B., Krajewski, J.J., Peck, W.F., Jr., Bordet, P., Cox, D.E.: Phys. Rev. Let.68, 3777 (1992)
Schäfer, W., Breuer, M., Bauer, G., Freimuth, A., Roden, R., Schlabitz, W., Büchner, B.: (to be published)