Signature of a pair of Majorana zero modes in superconducting gold surface states
| Autor: | Peng Wei, Kam Tuen Law, Patrick A. Lee, Jagadeesh S. Moodera, Sujit Manna, Yingming Xie |
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| Rok vydání: | 2019 |
| Předmět: |
Quantum decoherence
Nanowire topological superconductor FOS: Physical sciences 02 engineering and technology 01 natural sciences quantum computing law.invention Superconductivity (cond-mat.supr-con) Majorana bound state law 0103 physical sciences 010306 general physics Quantum computer Superconductivity Physics Multidisciplinary Condensed matter physics Condensed Matter - Superconductivity Fermion 021001 nanoscience & nanotechnology Majorana zero mode Magnetic field MAJORANA Physical Sciences Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | Proc Natl Acad Sci U S A Proceedings of the National Academy of Sciences of the United States of America, vol 117, iss 16 |
| DOI: | 10.48550/arxiv.1911.03802 |
| Popis: | Under certain conditions, a fermion in a superconductor can separate in space into two parts known as Majorana zero modes, which are immune to decoherence from local noise sources and are attractive building blocks for quantum computers. Promising experimental progress has been made to demonstrate Majorana zero modes in materials with strong spin–orbit coupling proximity coupled to superconductors. Here we report signatures of Majorana zero modes in a material platform utilizing the surface states of gold. Using scanning tunneling microscope to probe EuS islands grown on top of gold nanowires, we observe two well-separated zero-bias tunneling conductance peaks aligned along the direction of the applied magnetic field, as expected for a pair of Majorana zero modes. This platform has the advantage of having a robust energy scale and the possibility of realizing complex designs using lithographic methods. |
| Databáze: | OpenAIRE |
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