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Author  |
Sanchez, J.A.; Rumi, G.; Maldonado, R.C.; Bolecek, N.R.C.; Puig, J.; Pedrazzini, P.; Nieva, G.; Dolz, M.I.; Konczykowski, M.; van der Beek, C.J.; Kolton, A.B.; Fasano, Y. |
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Title |
Non-Gaussian tail in the force distribution: a hallmark of correlated disorder in the host media of elastic objects |
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Journal Article |
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Year |
2020 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci. Rep. |
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Volume |
10 |
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1 |
Pages |
19452 |
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Abstract |
Inferring the nature of disorder in the media where elastic objects are nucleated is of crucial importance for many applications but remains a challenging basic-science problem. Here we propose a method to discern whether weak-point or strong-correlated disorder dominates based on characterizing the distribution of the interaction forces between objects mapped in large fields-of-view. We illustrate our proposal with the case-study system of vortex structures nucleated in type-II superconductors with different pinning landscapes. Interaction force distributions are computed from individual vortex positions imaged in thousands-vortices fields-of-view in a two-orders-of-magnitude-wide vortex-density range. Vortex structures nucleated in point-disordered media present Gaussian distributions of the interaction force components. In contrast, if the media have dilute and randomly-distributed correlated disorder, these distributions present non-Gaussian algebraically-decaying tails for large force magnitudes. We propose that detecting this deviation from the Gaussian behavior is a fingerprint of strong disorder, in our case originated from a dilute distribution of correlated pinning centers. |
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Address |
Centro Atomico Bariloche and Instituto Balseiro, CNEA, CONICET and Universidad Nacional de Cuyo, 8400, San Carlos de Bariloche, Argentina. yanina.fasano@cab.cnea.gov.ar |
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English |
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ISSN |
2045-2322 |
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Call Number |
BT @ pedrazp @ |
Serial |
865 |
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