تقرير
Ubiquitous non-Majorana Zero-Bias Conductance Peaks in Nanowire Devices
| العنوان: | Ubiquitous non-Majorana Zero-Bias Conductance Peaks in Nanowire Devices |
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| المؤلفون: | Chen, Jun, Woods, Benjamin, Yu, Peng, Hocevar, Moira, Car, Diana, Plissard, Sebastien, Bakkers, Erik, Stanescu, Tudor, Frolov, Sergey |
| المصدر: | Phys. Rev. Lett. 123, 107703 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | We perform tunneling measurements on indium antimonide nanowire/superconductor hybrid devices fabricated for the studies of Majorana bound states. At finite magnetic field, resonances that strongly resemble Majorana bound states, including zero-bias pinning, become common to the point of ubiquity. Since Majorana bound states are predicted in only a limited parameter range in nanowire devices, we seek an alternative explanation for the observed zero-bias peaks. With the help of a self-consistent Poission-Schr\"odinger multiband model developed in parallel, we identify several families of trivial subgap states which overlap and interact, giving rise to a crowded spectrum near zero energy and zero-bias conductance peaks in experiments. These findings advance the search for Majorana bound states through improved understanding of broader phenomena found in superconductor-semiconductor systems. Comment: In this modified version, we made small changes and added detailed device information. All changes are in red text. All original data can be found at Zenodo:https://doi.org/10.5281/zenodo.5793360 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.123.107703 |
| URL الوصول: | http://arxiv.org/abs/1902.02773 |
| رقم الأكسشن: | edsarx.1902.02773 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.123.107703 |
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