Fluxoid Pinning in Nonideal Type-II Superconductors. : I. Force between a Fluxoid and a Lattice Defect

概要

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A general expression of the interaction energy between fluxoids and lattice defects is obtained by perturbational calculations of the generalized Ginzburg-Landau equations, which are derived by minimizing the free energy of the mixed state including elastic terms. The present expression is the same as Labusch's obtained only for a special type of lattice defects with a pure shear, but is shown to be applicable to any type of defects. The interaction force between a fluxoid and a lattice defects is derived for some typical types of defects by the use of the present expression of interaction energy, and the results o previous authors are shown to be unsatisfactory, even qualitatively. The present results give the first step for the derivation of a general expression of the so-called "pinning force", which is the final purpose of this series.
社団法人日本物理学会の論文
1969-08-05