کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1543605 | 1512867 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Finite-frequency current correlations are studied for a superconducting wire.
• Majorana bound states are allowed at the ends of the wire.
• The wire is attached to two terminals at one of its ends.
• In the topological phase we find vanishing cross-correlations for large frequency.
In this paper we study the finite-frequency current cross-correlations for a topological superconducting nanowire attached to two terminals at one of its ends. Using an analytic 1D model we show that the presence of a Majorana bound state yields vanishing cross-correlations for frequencies larger than twice the applied transport voltage, in contrast to what is found for a zero-energy ordinary Andreev bound state. Zero cross-correlations at high frequency have been confirmed using a more realistic tight-binding model for finite-width topological superconducting nanowires. Finite-temperature effects have also been investigated.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 82, August 2016, Pages 254–260