Home > Research > Publications & Outputs > Superconducting proximity effect and universal ...

Associated organisational unit


Text available via DOI:

View graph of relations

Superconducting proximity effect and universal conductance fluctuations

Research output: Contribution to journalJournal article

<mark>Journal publication date</mark>1/10/1999
<mark>Journal</mark>Physical Review B
Issue number13
Number of pages4
Pages (from-to)9291-9294
<mark>Original language</mark>English


We examine universal conductance fluctuations (UCF's) in mesoscopic normal-superconducting-normal (N-S-N) structures using a numerical solution of the Bogoliubov-de Gennes equation. We discuss two cases depending on the presence ("open" structure) or absence ("closed" structure) of quasiparticle transmission. In contrast to N-S structures, where the onset of superconductivity increases fluctuations, we find that UCF's are suppressed by superconductivity for N-S-N structures. We demonstrate that the fluctuations in ''open'' and "closed" structures exhibit distinct responses to an applied magnetic field and to an imposed phase variation of the superconducting order parameter.