“…Another consequence of a rectangular cross section is the occurrence of a "geometrical barrier" against flux penetration, as was shown by Indenbom et al [5] and by Zeldov et al [4]. The [6,7]. This makes it possible to obtain more detailed information than with other methods, such as magneto-optics [5,8] Fig.…”
Fig. 1(a). We see a belt of vortices along the sample edges. Its width varies in a range of 30-50 p, m, which is close to the sample half thickness d/2 = 65 p, m. Shown in Fig. 1(b) is the field profile B,(x) and the corresponding current distribution in the sample as calculated in the strip approximation from the image by using Brandt's approach [1], 2400 0031-9007/ 95/75(12)/2400(4) $06.00
“…Another consequence of a rectangular cross section is the occurrence of a "geometrical barrier" against flux penetration, as was shown by Indenbom et al [5] and by Zeldov et al [4]. The [6,7]. This makes it possible to obtain more detailed information than with other methods, such as magneto-optics [5,8] Fig.…”
Fig. 1(a). We see a belt of vortices along the sample edges. Its width varies in a range of 30-50 p, m, which is close to the sample half thickness d/2 = 65 p, m. Shown in Fig. 1(b) is the field profile B,(x) and the corresponding current distribution in the sample as calculated in the strip approximation from the image by using Brandt's approach [1], 2400 0031-9007/ 95/75(12)/2400(4) $06.00
“…Chapman [3] studied the linear bifurcation of several other periodic structures together with the linear stability of Abrikosov's [1] solution, which was found unstable, and of the solution in Kleiner et al [2], which was found stable to several different modes of perturbations. The periodic structure in [2] has also been observed experimentally [4].…”
The structure of periodic solutions to the Ginzburg-Landau equations in R 2 is studied in the critical case, when the equations may be reduced to the first-order Bogomolnyi equations. We prove the existence of periodic solutions when the area of the fundamental cell is greater than 4πM, M being the overall order of the vortices within the fundamental cell (the topological invariant). For smaller fundamental cell areas, it is shown that no periodic solution exists. It is then proved that as the boundaries of the fundamental cell go to infinity, the periodic solutions tend to Taubes' arbitrary N-vortex solution.
The ab-initio simulation of quantum vortices in a Bose-Einstein condensate is performed by adopting the complex Langevin techniques. We simulate the nonrelativistic boson field theory at finite chemical potential under rotation. In the superfluid phase, vortices are generated above a critical angular velocity and the circulation is clearly quantized even in the presence of quantum fluctuations.
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