Abstract
We have investigated theoretically the effect of oxygen deficiency (δ) on normal state resistivity (ρ) as well as its temperature dependence in YBa2Cu3O7-δ superconductors. This has been based on a potential which incorporates the structure factors and various interactions for double two-dimensional (2-D) conducting CuO2 plane. Using the Coulomb and electron-phonon terms of the interaction potential, we have then worked out the coupling strength (γ) for neighbouring electrons linked via 2-D acoustic phonons (hω_). Furthermore, the scattering time (τ e-ph) due to electron-phonon interaction is deduced. The variations inτ e-ph andρ e-ph are studied with oxygen deficiency (δ) which is in the range of 0·0≤δ≤1·0, and the results thus obtained are found to be consistent with the earlier reported data. The residual resistivityρ 0 obtained by extrapolation from experimental data together withρ e-ph will predict the nearly-linear behaviour of normal state resistivity at temperatures (T) [90≤T≤300 K] in YBa2Cu3O7-δ superconductors.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Anderson P W and Zou Z 1988Phys. Rev. Lett. 60 132
Bozovic I 1990Phys. Rev. B42 1969
Cava R J, Batlogg B, Chen C H, Rietmann E A, Zahurak S M and Werder D 1987Phys. Rev. B36 5719
Cava R Set al 1990Physica C165 419
Ginsberg D M 1990Physical Properties of high temperature superconductors (Singapore: World Sci. Publ.) Vols. I, II, III
Hariharan Y, Janawadkar M P, Sankarasastry V and Radhakrishnan T S 1988Pramana-J. Phys. 31 L615
Inderhees S E, Salamon M B, Friedmann T A and Ginsberg D M 1987Phys. Rev. B36 2401
Kim J H, Levin K, Wentzcovitch R and Auerbach A 1989Phys. Rev. B40 11378
Kim J H, Levin K, Wentzcovitch R and Auerbach A 1991Phys. Rev. B44 5148
Morita T, Takahashi Y and Ueda K 1990Phys. Soc. Jpn 59 29905
Saint Paul M, Tholence J L, Noel H, Levet J C, Potel M and Gougeon P 1989Solid State Commun. 69 1161
Sankar N, Sankaranarayan V, Srinivasan R, Rangarajan G and Subba Rao G V 1988Pramana-J. Phys. 30 L1
Singh R K, Varshney Dinesh and Khaskalam Amit K 1996Bull. Mater. Sci. 19 737
Tarascan J M, McKinnon W R, Greene L H, Hull G W and Vogel E M 1987Phys. Rev. B36 226
Timusk T and Tanner D B 1989 inPhysical properties of high temperature superconductors (ed.) D M Ginsberg (Singapore: World Sci. Publ.)
Varshney Dinesh and Singh R K 1995Phys. Rev. B52 7629
Varshney Dinesh, Singh R K and Khaskalam Amit K 1996Mater. Sci. Forum 223–224 365
Wu M Ket al 1987Phys. Rev. Lett. 58 908
Ziman J M 1960Electrons and phonons (New York: Oxford Univ. Press.)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Varshney, D., Singh, R.K. & Khaskalam, A.K. Effect of oxygen deficiency (δ) on normal state resistivity of YBa2Cu3O7-δ superconductors. Bull Mater Sci 21, 457–462 (1998). https://doi.org/10.1007/BF02790346
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02790346