Mutual-inductance route to the paramagnetic Meissner effect in two-dimensional Josephson-junction arrays

Leo, C. De; Rotoli, G.; Barbara, Paola; Nielsen, A. P.; Lobb, C. J.

doi:10.1103/physrevb.64.144518

Cited by 15 publications

(19 citation statements)

References 17 publications

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Section: Jja Modelmentioning

confidence: 80%

“…(ii) mutual inductances and boundary effects tend to favour a paramagnetic response in the centre of the array [9]. To compare our results with that in literature here we choose β L = 30 and β C = 65 as in [5,9]. We use a small 10 × 10 JJA in order to have compact figures and show a complete series of images for each value of f .…”

Section: Jja Modelmentioning

confidence: 99%

“…We simulate an array of N × N meshes each carrying four Josephson junctions. The equations describing the array in vector notation read as [9]…”

Section: Jja Modelmentioning

confidence: 99%

“…We use a small 10 × 10 JJA in order to have compact figures and show a complete series of images for each value of f . Larger JJAs are treated in [9,11] with similar results in terms of diamagnetic/paramagnetic response. The effect of variation of β L is shown in [11].…”

Section: Jja Modelmentioning

confidence: 99%

“…Here we concentrate on data analysis showing the effects of resolution, sample distance and tilting. The consequences of PME dominance in JJA have been treated elsewhere [9].…”

Section: Introductionmentioning

confidence: 99%

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SQUID microscope read-out on a Josephson junction array

Leo

Rotoli

2001

Supercond. Sci. Technol.

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LTC Josephson junction arrays (JJA) have recently gained interest as a model for the study of magnetization in superconductor materials. The presence of paramagnetic Meissner effect in such devices when field-cooled makes them an excellent candidate to discriminate between the different explanations given for such phenomenon. On the other hand, the understanding of the JJA physics is not simple due to the interplay between the non-linear behaviour of Josephson devices and the mutual induction effects in large JJA. The use of a SQUID microscope (SSM) to catch the magnetic image of the array is a distinctive feature of the experiment. So a study of SQUID read-out based on the actual JJA magnetic behaviour is needed in order to have a correct picture of what is going on. In this paper, using a simple way to reconstruct the complex array far-field viewed by the SQUID, we study how the flux read-out is dependent on array resolution, distance, tilting and noise for the typical situations in which arrays are found.

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Section: Jja Modelmentioning

confidence: 80%

Section: Jja Modelmentioning

confidence: 99%

“…We simulate an array of N × N meshes each carrying four Josephson junctions. The equations describing the array in vector notation read as [9]…”

Section: Jja Modelmentioning

confidence: 99%

Section: Jja Modelmentioning

confidence: 99%

“…Here we concentrate on data analysis showing the effects of resolution, sample distance and tilting. The consequences of PME dominance in JJA have been treated elsewhere [9].…”

Section: Introductionmentioning

confidence: 99%

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