| Title: |
Cooper-pair splitting in two parallel InAs nanowires |
| Authors: |
Baba, Shoji; Jünger, Christian; Matsuo, Sadashige; Baumgartner, Andreas; Sato, Yosuke; Kamata, Hiroshi; Li, Kan; Jeppesen, Sören; Samuelson, Lars; Xu, Hongqi; Schönenberger, Christian; Tarucha, Seigo |
| Publication Year: |
2018 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics |
| Description: |
We report on the fabrication and electrical characterization of an InAs double - nanowire (NW) device consisting of two closely placed parallel NWs coupled to a common superconducting electrode on one side and individual normal metal leads on the other. In this new type of device we detect Cooper-pair splitting (CPS) with a sizeable efficiency of correlated currents in both NWs. In contrast to earlier experiments, where CPS was realized in a single NW, demonstrating an intrawire electron pairing mediated by the superconductor (SC), our experiment demonstrates an inter- wire interaction mediated by the common SC. The latter is the key for the realization of zero-magnetic field Majorana bound states, or Parafermions; in NWs and therefore constitutes a milestone towards topological superconductivity. In addition, we observe transport resonances that occur only in the superconducting state, which we tentatively attribute to Andreev Bound states and/or Yu-Shiba resonances that form in the proximitized section of one NW. |
| Document Type: |
Working Paper |
| DOI: |
10.1088/1367-2630/aac74e |
| Access URL: |
http://arxiv.org/abs/1802.08059 |
| Accession Number: |
edsarx.1802.08059 |
| Database: |
arXiv |