Properties of the Ideal Ginzburg-Landau Vortex Lattice

Details Properties of the Ideal Ginzburg-Landau Vortex Lattice Properties of the Ideal Ginzburg-Landau Vortex Lattice

2003-04-10

arxiv.org/abs/cond-mat/0304237v1

Physics

Condensed Matter

Superconductivity

11 pages, 8 figures

Scientific paper

10.1103/PhysRevB.68.054506

The magnetization curves M(H) for ideal type-II superconductors and the maximum, minimum, and saddle point magnetic fields of the vortex lattice are calculated from Ginzburg-Landau theory for the entire ranges of applied magnetic fields Hc1 <= H < Hc2 or inductions 0 <= B < Hc2 and Ginzburg-Landau parameters sqrt(1/2) <= kappa <= 1000. Results for the triangular and square flux-line lattices are compared with the results of the circular cell approximation. The exact magnetic field B(x,y) and magnetization M(H, kappa) are compared with often used approximate expressions, some of which deviate considerably or have limited validity. Useful limiting expressions and analytical interpolation formulas are presented.

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