Inhomogeneous Josephson junction chains: a superconducting meta-material for superinductance optimization
| Autor: | D. V. Nguyen, D. M. Basko |
|---|---|
| Přispěvatelé: | Laboratoire de physique et modélisation des milieux condensés (LPM2C), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Basko, Denis |
| Rok vydání: | 2017 |
| Předmět: |
Josephson effect
Physics Superconductivity Condensed matter physics General Physics and Astronomy Metamaterial Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology Inductor 01 natural sciences Magnetic field Inductance [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Chain (algebraic topology) Condensed Matter::Superconductivity 0103 physical sciences General Materials Science Physical and Theoretical Chemistry 010306 general physics 0210 nano-technology Electrical impedance [PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph] ComputingMilieux_MISCELLANEOUS |
| Zdroj: | The European Physical Journal. Special Topics The European Physical Journal. Special Topics, EDP Sciences, 2017, 226 (7), pp.1499-1514 |
| ISSN: | 1951-6401 1951-6355 |
| DOI: | 10.1140/epjst/e2016-60278-4 |
| Popis: | We report a theoretical study of the low-frequency impedance of a Josephson junction chain whose parameters vary in space. Our goal is to find the optimal spatial profile which maximizes the total inductance of the chain without shrinking the low-frequency window where the chain behaves as an inductor. If the spatial modulation is introduced by varying the junction areas, we find that the best result is obtained for a spatially homogeneous chain, reported earlier in the literature. An improvement over the homogeneous result can be obtained by representing the junctions by SQUIDs with different loop areas, so the inductances can be varied by applying a magnetic field. Still, we find that this improvement becomes less important for longer chains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink