Mallik, R. ; Sampathkumaran, E. V. ; Alonso, J. A. ; Martinez-Lope, M. J. (1998) Complex low-temperature transport behaviour of RNiO3-type compounds Journal of Physics: Condensed Matter, 10 (18). pp. 3969-3976. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/10/18/007
Related URL: http://dx.doi.org/10.1088/0953-8984/10/18/007
Abstract
The temperature-dependent electrical resistance behaviour of PrNiO3, NdNiO3, Nd0.99Sr0.01NiO3 and Sm0.55Nd0.45NiO3 in zero field as well as in the presence of a magnetic field (H) is reported. The application of H up to 70 kOe does not influence the so-called metal-insulator transition in any of these compounds significantly. Interestingly, the magnitude of the magnetoresistance, Δρ/ρ={ρ(H)-ρ(0)}/ρ(0) , in the vicinity of 35 K is significantly larger than that noted below 10 K. It appears that there are sign crossovers in the magnetoresistance as the temperature is varied below the transition temperature in most of these compounds. The present results suggest that the physics below the transition temperature is quite complex.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics. |
| ID Code: | 45732 |
| Deposited On: | 29 Jun 2011 03:22 |
| Last Modified: | 29 Jun 2011 03:22 |
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