Finite-Frequency Dissipation in Two-Dimensional Superconductors with Disorder at the Nanoscale.
Nanomaterials (Basel)
; 11(8)2021 Jul 23.
Article
de En
| MEDLINE
| ID: mdl-34443718
ABSTRACT
Two-dimensional superconductors with disorder at the nanoscale can host a variety of intriguing phenomena. The superconducting transition is marked by a broad percolative transition with a long tail of the resistivity as function of the temperature. The fragile filamentary superconducting clusters, forming at low temperature, can be strengthened further by proximity effect with the surrounding metallic background, leading to an enhancement of the superfluid stiffness well below the percolative transition. Finite-frequency dissipation effects, e.g., related to the appearance of thermally excited vortices, can also significantly contribute to the resulting physics. Here, we propose a random impedance model to investigate the role of dissipation effects in the formation and strengthening of fragile superconducting clusters, discussing the solution within the effective medium theory.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Nanomaterials (Basel)
Année:
2021
Type de document:
Article
Pays d'affiliation:
Italie