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- Title
Pairing type change upon an increase in the cerium doping level in the NdCeCuO electronic superconductor.
- Authors
Charikova, T.; Kharus, G.; Shelushinina, N.; Petukhova, O.; Ivanov, A.
- Abstract
We report on the results of analyzing the temperature dependences of the resistivity of the NdCeCuO electronic superconductor with x = 0.14 (underdoped range), x = 0.15 (optimal doping), and x = 0.18 (overdoped range) and with various degrees of annealing in an oxygen-free atmosphere in magnetic fields up to H = 90 kOe ( H | c, J | ab) in the temperature range T = (0.4-300) K. It is shown that the observed differences in the dependences of the slope of the upper critical field $(dH_{c2} /dT)|_{T_c } $ on the degree of disorder in the NdCeCuO system upon a change in the cerium doping level indicate a change in the symmetry of d-type pairing to anisotropic s pairing.
- Subjects
DOPED semiconductors; SUPERCONDUCTORS; TEMPERATURE effect; ELECTRICAL resistivity; MAGNETIC fields; CERIUM; ANISOTROPY
- Publication
Journal of Experimental & Theoretical Physics, 2012, Vol 114, Issue 3, p496
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776112020173