Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 1/10/1999 |
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<mark>Journal</mark> | Physical review B |
Issue number | 13 |
Volume | 60 |
Number of pages | 4 |
Pages (from-to) | 9291-9294 |
Publication Status | Published |
<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.