English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The interplay of quantum fluctuations and dissipation in chains of mesoscopicsuperconducting grains is analyzed, and the results are also applied tonanowires. It is shown that in 1-d arrays of resistively shunted Josephsonjunctions, the superconducting-normal charge relaxation within the grains playsan important role. At zero temperature, two superconducting phases can exist,depending primarily on the strength of the dissipation. In the fullysuperconducting phase (FSC), each grain acts superconducting, and the couplingto the dissipative conduction is important. In the SC* phase, the dissipationis irrelevant at long wavelengths. The phase transitions between these twosuperconducting phases and the normal metallic phase may be either local orglobal, and possess rich and complex critical properties. These are inferredfrom both weak and strong coupling renormalization group analyses. Atintermediate temperatures, near either superconductor-to-normal phasetransition, there are regimes of super-metallic behavior, in which theresistivity first decreases gradually with decreasing temperature beforeeventually increasing as temperature is lowered further. The results on chainsof Josephson junctions are extended to continuous superconducting nanowires andthe subtle issue of whether these can exhibit an FSC phase is considered.Potential relevance to superconductor-metal transitions in other systems isalso discussed.Comment: 42 pages, 14 figure

Superconductor-to-normal transitions in dissipative chains of mesoscopic grains and nanowires