Pinning of linear vortices and possible distances between them in a 3D ordered Josephson medium with a nonzero structural factor |
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Authors: | M. A. Zelikman K. A. Potseluev |
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Affiliation: | 1. St. Petersburg State Technical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia
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Abstract: | On the basis of the fluxoid quantization conditions, we derive a system of equations describing the current configuration of two interacting linear vortices in a 3D ordered Josephson medium in the entire range of possible values of structural factor b. The axes of these vortices are located in the middle row of an infinite strip with a width comprising 13 meshes. We propose a method for solving this system, which makes it possible to calculate the current configurations exactly. The critical values of pinning parameter I d are calculated, for which two linear vortices can still be kept at a distance of d meshes between their centers in the entire range of possible values of parameter b. The formula describing the I d(b) dependences for various values of d is derived. The dependences of the maximal pinning force F on parameter I for various values of b are analyzed. It is shown that for the same value of I, larger values of b correspond to larger maximal pinning forces. |
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