MAGNETIC STRUCTURE OF FLUX LINE LATTICE


Title, author, abstract

title
MAGNETIC STRUCTURE OF FLUX LINE LATTICE
authors
E. S. Otabe, M. Nozue, T. Matsushita
Department of Computer Science and Electronics, Kyushu Institute of Technology,
680--4 Kawazu, Iizuka, 820 JAPAN
abstract
Magnetic structure of a perfect triangular lattice at relatively low fields is numerically calculated by superposing isolated flux lines based on the Ginzburg-Landau theory. It is found that the magnetic flux density is fairly uniform spatially and the difference between the maximum and minimum values is 25~\% when the fluxoid spacing, $a_{\rm f}$, is equal to the penetration depth, $\lambda$, and the G-L parameter $\kappa=50$. The obtained magnetic structure is expressed in the Fourier series and the expansion summed terms are obtained as a function of $\kappa$ and $a_{\rm f}/\lambda$. It is seen that the number of coefficients needed for reconstruction becomes small with increasing magnetic flux density.
Original paper appears in
8th International Workshop on Critical Current
May 27-29, 1996
Kitakyushu, Japan