Abstract
Cu0.5Tl0.5Ba2Ca n−1Cu n O 2n+4−δ (n = 2, 3, 4) thin film samples have been investigated for excess conductivity analysis (fluctuation-induced conductivity (FIC)). The thin films are c-axis oriented and have shown the tetragonal structure in which the T c (R = 0) of the samples increases with an increasing number (n) of the CuO2 planes. The FIC analysis is carried out by following the Aslamazov-Larkin theory and in the critical regimes from the Ginzburg-Landau number. By employing the Ginzburg-Landau theory, we have calculated important superconductivity parameters. The values of ξ c(0), VF, and τ φ increase, but the inter-layer coupling (J) of CuO2 planes is suppressed with the increasing number of CuO2 planes in these samples. The λ pd, however, is suppressed, but the values of B c(T), B c1(T), and J c(0) increase with the increasing number of conducting planes in Cu0.5Tl0.5Ba2Ca n−1Cu n O 2n+4−δ (n = 2, 3, 4) samples. This demonstrates the increase in flux pinning characters that is most likely induced by thallium defects in the charge reservoir layer.
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Chrzanowski, J., Xing, W.B., Atlan, D.: Condensed Matter Physics, Superconductivity and Superfluidity (G6411)-30035742 (1994)
Khan, N.A., Manzoor, A.: J. Appl. Phys. 105, 113923 (2009)
Khan, N.A., Nawaz, S.: Journals of Alloys and Compounds 487, 243–252 (2009)
Khan, N.A., Hussain, S.: Physica C 470, 51–54 (2010)
Khurram, A.A., Khan, N.A.: Supercond. Sci. Technol. 19, 670–684 (2006)
Khan, N.A., Kameli, P., Khurram, A.A.: Supercond. Sci. Technol. 19, 410–414 (2006)
Khan, N.A., Sabeeh, K.: Physica B 349, 156–158 (2004)
Iyo, A., Tanaka, Y., Terada, N., Tokumoto M., Ihara, H.: Physica B 284-288, 867–868 (2000)
Speller, V.S.C.: Mater. Sci. Technol. 19, 269–282 (2003)
Khan, N.A., Mumtaz, M., Ahadian M.M.M, Iraji-zad, A.: Physica C 453, 46–51 (2007)
Khan, N.A., Sekita, Y., Tateai, F., Kojim, T., Ishida, K., Terada, N., Ihara, H.: Physica C 320, 39–44 (1999)
Khan, N.A., Sekita, Y., Ihara, H.: Supercond. Sci. Technol. 15, 15613 (2002)
Bean, C.P.: Review of Modern Physics 36, 31 (1964)
Ihara, H., Tanaka, K., Tanaka, Y., Iyo, A., Terada, N., Tokumoto, M., Ariyama, M., Hase, I., Sundaresan, A., Hamada, N., Miyashita, S., Tokiwa, K., Watanabe, T.: Physica C 341-348, 487–488 (2000)
Upriti, U.C., Narlikar, A.V.: Solid State Commun. 100, 615 (1996)
Watanabe, T., Miyashita, S., Ichioka, N., Tokiwa, K., Tanaka, K., Iyo, A., Tanaka Y., Ihara, H.: Physica B 284-288, 1075–1076 (2000)
Sato, T., Nakane, H., Mori, N., Yoshizawa, S.: Physica C 344-360, 244–247 (2003)
Solovjov, A.L., Tkachenko, M.A., Vovk, R.V., Chroneos, A.: Physica C 501, 24–31 (2014)
Kaur, M., Srinibasan, R., Mehta, G.K., Kanjilal, D., Pinto, R., Ogale, S.B., Mohan, S., Ganesan, V.: Physica C 443, 61–68 (2006)
Lawrence, W.E., Doniach, S.: Proceedings of the 12th International Conference on Low Temperature Physics. In: Kanda, E. (ed.) , p 361, Keigaku, Tokyo (1971)
Aly, A.I.A., Ibrahim, I.H., Awad, R.A., El-Harizy, A.J. of Supercond. Nov. Magn. 23, 1325 (2010)
Rojas Sarmiento, M.P., Uribe Laverde, M.A., Vera Lopez, E., Landinez Tellez, D.A., Roa-Rojas, J.: Physica B 398, 360 (2007)
Solovjov, A.L., Dmitriev, V.M., Hambermeier, H.U., Trofimov, I.E.: Physical Review B 55(13), 8551–8556 (1997)
Azzouz, F.B., Zouaoui, M., Annabi, M., Salem, M.B.: Sol. Stat. Phys. C 3, 3048 (2006)
Tanaka, K., Iyo, A., Tanaka, Y., Tokiwa, K., Tokumoto, M., Ariyama, M., Tsukamoto, T., Watanabe, T., Ihara, H.: Physica B 284-288, 1081–1082 (2000)
Ihara, H., Iyo, A., Tanaka, K., Tokiwa, K., Ishida, K., Terada, N., Tokumoto, M., Tsukamoto, Y., Watanabe, T., Umeda, M.: Physica C 282-287, 1973–1974 (1997)
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Khan, N.A., Safeer, S.H., Rahim, M. et al. Excess Conductivity Analysis of Cu0.5Tl0.5Ba2Ca n−1Cu n O 2n+4−δ (n = 2, 3, 4) Thin Films. J Supercond Nov Magn 30, 1493–1498 (2017). https://doi.org/10.1007/s10948-016-3942-z
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DOI: https://doi.org/10.1007/s10948-016-3942-z