Abstract
The temperature dependences ρab(T) of Nd2−x CexCuO4+δ single crystals with 0≤x≤0.20 are studied and analyzed on the basis of the concepts in the theory of disordered 2D systems. The results are compared with the data obtained for other copper-oxide HTSC. It is found that a transition to the superconducting state in the optimal doping region 0.14≤x≤0.18 occurs only in crystals with a fairly small degree of disorder (k Fl≥2, where l is the mean free path). This transition is compatible with the weak 2D-localization mode as long as the localization radius is longer than the characteristic size of a Cooper pair. The superconducting transition temperature in the optimal doping region increases monotonically with the parameter k Fl characterizing the degree of disorder in the crystal. The degradation of superconducting properties upon a further increase in the doping level (x>0.18) is apparently associated with a transition from 2D to 3D conductivity in the single crystal.
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References
K. Sreedhar and P. Ganguly, Phys. Rev. B 41, 371 (1990).
H. Takagi, S. Uchida, and Y. Tokura, Phys. Rev. Lett. 62, 1197 (1989).
E. Dagotto, Rev. Mod. Phys. 66, 763 (1994).
G. M. Eliashberg, in Physical Properties of High Temperature Superconductors, Ed. by D. M. Ginsberg (World Scientific, Singapore, 1989; Mir, Moscow, 1990), p. 505.
P. A. Lee and T. V. Ramakrishnan, Rev. Mod. Phys. 57, 293 (1985).
B. Beschoten, S. Sadewasser, C. Güntherodt, and C. Quitmann, Phys. Rev. Lett. 77, 1837 (1996).
D. Mandrus, L. Forro, C. Kendziora, and L. Mihaly, Phys. Rev. B 44, 2418 (1991).
K. Schlenga, H. Bach, and K. Westerholt, Physica C (Amsterdam) 221, 161 (1994).
K. Karpinska, A. Malinowski, M. Z. Cieplak, et al., Phys. Rev. Lett. 77, 3033 (1996).
Y. Fukuzumi, K. Mizuhashi, K. Takenaka, and S. Uchida, Phys. Rev. Lett. 76, 684 (1996).
N. A. Fortune, K. Murata, M. Ishibashi, et al., Phys. Rev. B 43, 12930 (1991); W. Jiang, J. L. Peng, Z. Y. Li, and R. L. Greene, Phys. Rev. B 47, 8151 (1993).
S. Tanda, S. Ohzeki, and T. Nakayama, Phys. Rev. Lett. 69, 530 (1992).
X. Q. Xu, S. N. Mao, Wu Jiang, et al., Phys. Rev. B 53, 871 (1996).
T. Fujita, N. Kikugawa, M. Ito, et al., in Proceedings of VI Internatonal Conference M2S-HTSC 2P09-83, Houston, 2000.
A. A. Ivanov, S. G. Galkin, A. V. Kuznetsov, et al., Physica C (Amsterdam) 180, 69 (1991).
G. I. Harus, A. N. Ignatenkov, A. I. Ponomarev, et al., Pis’ma Zh. Éksp. Teor. Fiz. 70, 93 (1999) [JETP Lett. 70, 97 (1999)]; G. I. Harus, A. N. Ignatenkov, A. I. Ponomarev, et al., Zh. Éksp. Teor. Fiz. 116, 1723 (1999) [JETP 89, 933 (1999)].
P. Fournier, P. Mohanty, E. Maiser, et al., Phys. Rev. Lett. 81, 4720 (1998).
L. Alff, S. Meyer, S. Kleefisch, et al., Phys. Rev. Lett. 83, 2644 (1999).
T. B. Charikova, A. I. Ponomarev, A. N. Ignatenkov, et al., Fiz. Met. Metalloved. 91, 46 (2001).
B. I. Shklovskii and A. L. Efros, in Electronic Properties of Doped Semiconductors (Nauka, Moscow, 1979; Springer-Verlag, New York, 1984), Chap. 11.
A. L. Efros, Solid State Commun. 70, 253 (1989).
N. M. Plakida, High Temperature Superconductors (Mezhdunarodnaya Programma Obrazovaniya, Moscow, 1996).
Y. Nakamura and S. Uchida, Phys. Rev. B 47, 8369 (1993).
M. V. Sadovskii, Sverkhprovodimost: Fiz., Khim., Tekh. 8, 337 (1995).
M. P. A. Fisher, G. Grinstein, and S. M. Girvin, Phys. Rev. Lett. 64, 587 (1990).
E. Z. Meilikhov, Sverkhprovodimost: Fiz., Khim., Tekh. 4, 1437 (1991).
B. L. Al’tshuler and A. G. Aronov, Pis’ma Zh. Éksp. Teor. Fiz. 64, 407 (1996) [JETP Lett. 64, 444 (1996)].
V. V. Kapaev and Yu. V. Kopaev, in Proceedings of the XXXI Conference on Low Temperature Physics, Moscow, 1998; A. I. Ponomarev, A. N. Ignatenkov, L. D. Sabirzyanova, et al., in Proceedings of the International Conference on the Physics of Semiconductors, Jerusalem, 1998, CD-ROM, Sec. 5, Subsec. A, No. 36.
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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 119, No. 6, 2001, pp. 1250–1256.
Original Russian Text Copyright © 2001 by Ignatenkov, Ponomarev, Sabirzyanova, Charikova, Kharus, Shelushinina, Ivanov, Churkin.
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Ignatenkov, A.N., Ponomarev, A.I., Sabirzyanova, L.D. et al. Effect of disorder on the transport properties of the high-T c superconductor Nd2− x CexCuO4+δ . J. Exp. Theor. Phys. 92, 1084–1089 (2001). https://doi.org/10.1134/1.1385650
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DOI: https://doi.org/10.1134/1.1385650