Coexistence of Antiferromagnetism and Superconductivity

Abstract

resistance in the superconducting ring is i c ^ <i> 0 /2L. This resistance is of a fundamental nature related to the trapping of flux and a change of state of the superconductor.

Long-Range Antiferromagnetic Spin Correlations in Scandium Metal

“…The recent measurements of Craig et al 7 on ferromagnetic nickel have demonstrated the relevance of such a criterion, but we might also mention that this choice gives values for T c which are consistent with values obtained from the most reliable analysis of the data obtained by other methods.…”

“…This leads to the prediction of constant 9/ c. 7 If, however, R/K~" 1 »1, 3C av and thus kd will be reduced with respect to the case of nonoscillatory interaction of equal range and magnitude because of a partial cancellation of the contributions of the F(xij) to JC Z *. At constant concentration this cancellation will be the stronger, the larger R/K~1.…”

Multi-symplectic method to analyze the mixed state of II-superconductors

“…Then we obtain the relationships among temperature T, magnetic intensity B and resistivity ρ, which reflect the properties of the mixed state of the two-band II-superconductor directly. Figure 6 shows the relationships we obtained and the experimental results of Finnemore [27][28][29][30] . From the volt-ampere characteristic curves of the II-superconductor, we can conclude that: When the ambient temperature is 30 K, the resistance of the II-superconductor increases at different speeds with different applied fields, and the greater the applied field is, the quicker the resistance increases; when the applied field is 5 T, the resistance of the II-superconductor increases at different speeds with different ambient temperatures, and the higher the ambient temperature is, the quicker the resistance increases; the maximum current of the model is about 9.4 A, and the normal resistance of the model is about 2.35×10 −6 Ω.…”

Combined effects of post-growth thermal treatment and chemical substitution on physical properties of CaFe₂As₂

“…If J 2 is assumed to be constant or decrease slightly with increasing rare earth atomic number, the depression of T c with rare earth scales with the deGennes factor. (Finnemore et al, 1965a), which…”