Erratum: Interplay between the quantum interference and current localization phenomena in superconductor non-ideal mesoscopic rings (Superconductor Science and Technology (2019) 32 (105008) DOI: 10.1088/1361-6668/ab315f)
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PAPARI, Gian Paolo, FOMIN, Vladimir. Erratum: Interplay between the quantum interference and current localization phenomena in superconductor non-ideal mesoscopic rings (Superconductor Science and Technology (2019) 32 (105008) DOI: 10.1088/1361-6668/ab315f). In: Superconductor Science and Technology, 2020, nr. 4(33), p. 0. ISSN -. DOI: https://doi.org/10.1088/1361-6668/ab315f
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Superconductor Science and Technology
Numărul 4(33) / 2020 / ISSN - /ISSNe 1361-6668

Erratum: Interplay between the quantum interference and current localization phenomena in superconductor non-ideal mesoscopic rings (Superconductor Science and Technology (2019) 32 (105008) DOI: 10.1088/1361-6668/ab315f)

DOI: https://doi.org/10.1088/1361-6668/ab315f

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Papari Gian Paolo12, Fomin Vladimir345
 
1 Universitatea din Napoli,
2 Napoli Research Unit, SPIN CNR,
3 Moldova State University,
4 National Research Nuclear University MEPhI, Moscow,
5 Institute for Integrative Nanosciences
 
Disponibil în IBN: 26 martie 2021


Rezumat

We propose a mean-field approach to describe the fluxoid dependence of magnetoresistance oscillations measured on two YBa2Cu3O7-x (YBCO) nanorings. We unveil the relation between the quantum interference processes and current localization phenomena in superconductor nanorings, which are non-ideal because of the presence of stubs. The model, based on the change in supercurrent transmission due to fluxoid dynamics, provides a dependence of the measured differential voltage on the external magnetic field. In particular, the signature of the Little and Parks (LP) effect results from phase dynamics involving the transmission of probe currents crossing the ring, while magnetoresistance background is related to the screening currents dynamics driven by vortex nucleation. The model allows for tracing out the entire magnetoresistance, which is the result of the superposition of single vortex-like topological defects involving current localization. This approach provides a new conceptual frame to explain the LP effect that does not invoke the lowering of superconducting stiffness. 

Cuvinte-cheie
fluxoid quantization, Little and Parks effect, magnetoresistance oscillations, vortex matter