Surface field in an ensemble of superconducting spheres under external magnetic field

Peñaranda, Angelina; Auguet, C.; Ramírez‐Piscina, L.

doi:10.1016/s0168-9002(98)01440-5

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…These results are almost identical to the results without transitions of Ref. 16 . For this value of the external field, only a reduced number of spheres have already transited, and what one sees is the result of the diamagnetic interactions on almost completely disordered configurations of superconducting spheres.…”

Section: Resultssupporting

confidence: 90%

“…A better comparison with experimental results might need a revision of the B th distribution. Also the employ of a larger number of spheres in simulations could be necessary to reduce finite-size effects 16 . On the other hand, the numerical method can be straightforwardly generalized to SSG configurations with spheres of different sizes.…”

Section: Discussionmentioning

confidence: 99%

“…(6) is a formidable task for configurations with a representative number N of spheres. Instead, we employ the following iterative method 16 . Eq.…”

Section: Simulation Detailsmentioning

confidence: 99%

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Diamagnetic interactions in disordered suspensions of metastable superconducting granules

Peñaranda¹,

Auguet²,

Ramírez‐Piscina³

2002

Eur. Phys. J. B

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The simulation of the transition sequence of superheated Type I superconducting granules (SSG) in disordered suspensions when an external magnetic field is slowly increased from zero has been studied. Simulation takes into account diamagnetic interactions and the presence of surface defects. Results have been obtained for the transition sequence and surface fields distribution covering a wide range of densities. These results are compared with previous analytical perturbative theory, which provides qualitative information on transitions and surface magnetic fields during transitions, but with a range of validity apparently limited to extremely dilute samples. Simulations taking into account the complete diamagnetic interactions between spheres appear to be a promising tool in interpreting SSG experiments, in applications such as particle detectors, and in some fundamental calculations of Solid State Physics.

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Section: Resultssupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

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Diamagnetic interactions in disordered suspensions of metastable superconducting granules

Peñaranda¹,

Auguet²,

Ramírez‐Piscina³

2002

Eur. Phys. J. B

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“…Resolution of the Laplace equation for the magnetic scalar potential with the appropriate boundary conditions enables the surface magnetic field to be known on each microsphere. We have used a numerical procedure that allows us both to consider the complete multi-body problem and to reach multipolar contributions of an arbitrary order [8]. When the maximum local magnetic field on the surface of any sphere reaches its threshold value B th ; the sphere transits and the configuration becomes one of N À 1 superconducting spheres.…”

Section: Transitionsmentioning

confidence: 99%

Hot-border effects, ordering, and avalanches in planar arrays of superheated superconducting granules

Peñaranda

Ramírez‐Piscina

2005

Nuclear Instruments and Methods in Physics Research Section A:

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We present results of simulations of transitions in planar arrays of superheated superconducting granules (PASS) immersed in an external magnetic field parallel to the system. Analysis of the behaviour of the system when the external field is slowly increased from zero shows the existence of an interval of external fields for which no transitions are produced. This gap is found to be a consequence of ordering induced by transitions. However, this ordering is different for diluted and for concentrated systems. Avalanches of different sizes with distributions depending on concentration are observed. r

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“…Confined nanoscale superconductors are interesting objects for the creation of highly sensitive detectors based on the phase transition of superheated superconducting granules induced by the energy loss of incident radiation. Such detectors are currently under development for the detection of neutrinos and dark matter, and they have been further proposed as sensors for many types of particles [41,42].…”

Section: Introductionmentioning

confidence: 99%

Critical field of a type-I spherical superconducting inclusion

Shevtsova¹

2005

Supercond. Sci. Technol.

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Surface field in an ensemble of superconducting spheres under external magnetic field

Cited by 6 publications

References 16 publications

Diamagnetic interactions in disordered suspensions of metastable superconducting granules

Diamagnetic interactions in disordered suspensions of metastable superconducting granules

Hot-border effects, ordering, and avalanches in planar arrays of superheated superconducting granules

Critical field of a type-I spherical superconducting inclusion

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