Modelling of high-Tc superconductors by means of disordered Josephson-junction arrays

Giannelli, A.; Giovannella, Carlo

doi:10.1016/0022-5088(90)90572-2

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The main difference with our previous simulations [1,3] is that now the expression of the vector potential, Aij , is composed by two distinct terms (the second one allows for the long-range interaction between currents):…”

Section: -Modelmentioning

confidence: 84%

“…In the past we have shown that the static magnetic properties of the high-Te superconductors, and, in particular, their magnetic-hysteresis loops, can be reasonably reproduced by using 2D arrays of superconducting junctions as model systems [1]. Our description however: a) did not take into account the effect of the screening currents, and thus was confmed essentially to a narrow temperature range below the critical temperature, for which the array penetration depth, ~ ,, can be considered infinite; b) was focused on what we may call the (,geometrical, magnetism (*) Paper presented at the ,,VII Congresso SATT., Torino, 4-7 October 1994. of the array, i.e.…”

Section: -Introductionmentioning

confidence: 99%

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Lower critical field and vortices configuration in 2D superconducting junction arrays

et al. 1994

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In order to describe properly the magnetic status of a 2D superconducting junction array, one has to consider not only the effect of the screening currents but also that of the particular experimental protocol followed to measure the physical quantities of interest like, for example, the magnetization. We show that the value of the lower critical field, f~l, of the junction array depends strongly on the intensity of the screening currents, i.e. on the strength of the junction coupling, Ej, and that reliable results can be obtained only by considering the full-inductance matrix. We also show that the magnetic configuration of the vortices may depend on the particular experimental approach followed (static or dynamic) and, even, in some cases, on the initial configuration of the phases.

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Section: -Modelmentioning

confidence: 84%

Section: -Introductionmentioning

confidence: 99%