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Anisotropic low-temperature magnetoresistivity in the normal state of L2−xCexCuO4 single crystals

Anisotropic low-temperature magnetoresistivity in the normal state of L2−xCexCuO4 single crystals
 
Crusellas Font, M. Àngels ; Fontcuberta, J. ; Piñol, S.
1994

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Enllaç permanent: http://hdl.handle.net/10854/3069
 
Versió de l'editor: https://doi.org/10.1016/0921-4534(94)90210-0
 

Abstract

We report in-plane ρab(T, H) and c-axis ρc(T, H) electrical magnetoresistivity measurements on several L2−x CexCuO4 (L=Pr, Sm, Nd) superconducting single crystals. It is found that in the normal state both resistivities ρab(T) and ρc(T) display a minimum at certain temperatures Tminab and Tminc which separates regions of metallic ...»»»»
We report in-plane ρab(T, H) and c-axis ρc(T, H) electrical magnetoresistivity measurements on several L2−x CexCuO4 (L=Pr, Sm, Nd) superconducting single crystals. It is found that in the normal state both resistivities ρab(T) and ρc(T) display a minimum at certain temperatures Tminab and Tminc which separates regions of metallic behavior at T>Tmin from semiconducting-like behavior at T<Tmin. In the low-temperature region (T<Tmin), ρab(T) has a logarithmic temperature dependence ρab≈-ln T and negative magnetoresistivity which are argued to be due to 2D localization effects. In contrast, at low temperatures, ρc(T) can be described in terms of a hopping conductivity.^^^^

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(c) 1994 Elsevier. Published article is available at: http://dx.doi.org/10.1016/0921-4534(94)90210-0
 

Citation:

Crusellas Font, M. À., Fontcuberta, J., & Pinol, S. (1994). Anisotropic low-temperature magnetoresistivity in the normal-state of L(2-X)ce(x)cuo(4) single-crystals. Physica C; International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV), GRENOBLE, FRANCE. , 235 1401-1402.