On the lower critical field and phase diagram of a thin cylindrical type-II superconductor |
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Authors: | E A Shapoval |
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Institution: | (1) All-Russia Scientific-Research Institute of the Metrological Service, 119361 Moscow, Russia |
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Abstract: | The lower critical field H
c1
cyl
(T) of a superconducting cylinder with radius r
0∼ξ(T)≪λ(T) is found on the basis of the Ginzburg-Landau theory with various boundary conditions. These results together with the well-known
results for the upper critical field are used to construct phase diagrams in terms of the field versus the reduced radius
r
0∼ξ(T) variables. The jump in the average magnetization at H
c1
cyl
(T) is calculated as a function of the reduced radius.
Pis’ma Zh. éksp. Teor. Fiz. 69, No. 8, 537–542 (25 April 1999) |
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Keywords: | |
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