Abstract
Temperature dependences of the electrical resistivity measured in different magnetic fields (B ∥ c, J ∥ ab) of electron doped Nd2−x Ce x CuO4+δ single crystals with different cerium concentration (x=0.15, 0.17, and 0.20) and oxygen content (δ) were studied in a temperature range of 1.8–40 K. It was found that the slope of the upper critical field \((dB_{c2}/dT)|_{T_{c}}\) decreases with the increase of the disorder in the system. So, we can distinguish experimentally d-wave and anisotropic s-wave superconductors. Moreover, the slope of the upper critical field and critical temperature decrease with increase of the disorder parameter like in d-wave superconductors with anisotropic scattering.
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Dai, X., Fang, Z., Zhou, Y., Zhang, F.: cond-mat/0803.3982v1
Armitage, N.P., Lu, D.H., Kim, C., et al.: Phys. Rev. Lett. 87, 147003 (2001)
Fehrenbacher, R., Norman, M.R.: Phys. Rev. B 50, 3495 (1994)
Borkowski, L.S., Hirschfeld, P.J.: Phys. Rev. B 49, 15404 (1994)
Posazhennikova, A.I., Sadovskii, M.V.: JETP Lett. 63, 358 (1996)
Ignatenkov, A.N., Ponomarev, A.I., Sabirzyanova, L.D., et al.: J. Exp. Theor. Phys. 92, 1084 (2001)
Charikova, T.B., Ignatenkov, A.N., Ponomarev, A.I., et al.: Physica C 408–410, 372 (2004)
Charikova, T.B., Ponomarev, A.I., Kharus, G.I., et al.: J. Exp. Theor. Phys. 105, 626 (2007)
Lee, P.A., Ramakrishnan, T.V.: Rev. Mod. Rhys. 57, 287 (1985)
Ivanov, A.A., Galkin, S.G., Kuznetsov, A.V., et al.: Physica C 180, 69 (1991)
Ponomarev, A.I., Ignatenkov, A.N., Charikova, T.B., et al.: Phys. Met. Metallogr. 95, 551 (2003)
Gantmakher, V.F., Emel’chenko, G.A., Naumenko, I.G., et al.: Pis’ma Ž Eksp. Teor. Fiz. 72, 33 (2000)
Werthamer, N.R., Helfand, E., Hohenberg, P.C.: Phys. Rev. 147, 295 (1966)
Goshchitskii, B.N., Davydov, S.A., Karkin, A.E., et al.: High Temperature Superconductivity, p. 104. World Scientific, Singapore (1990). Aksenov, V.L., Bogolyubov, N.N., Plakida, N.M. (eds.)
Giapintakis, J., Ginsberg, D.M., et al.: Phys. Rev. B 50, 15967 (1994)
Haran, G., Nagi, A.D.: Phys. Rev. B 54, 15463 (1996)
Posazhennikova, A.I., Sadovskii, M.V.: J. Exp. Theor. Phys. 85, 1162 (1997)
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Charikova, T.B., Shelushinina, N.G., Harus, G.I. et al. Effect of Nonstoichiometric Disorder on the Upper Critical Field in Electron Doped Nd2−x Ce x CuO4+δ Single Crystals. J Supercond Nov Magn 22, 21–24 (2009). https://doi.org/10.1007/s10948-008-0371-7
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DOI: https://doi.org/10.1007/s10948-008-0371-7