期刊
NATURE MATERIALS
卷 18, 期 10, 页码 1060-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41563-019-0457-6
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- Foundation CFM-J.P. Aguilar grant
- ERC Starting Grant CIRQYS
- Region Ile de France
- ANR FunTheme
The interplay of superconductivity with non-trivial spin textures is promising for the engineering of non-Abelian Majorana quasiparticles. Spin-orbit coupling is crucial for the topological protection of Majorana modes as it forbids other trivial excitations at low energy but is typically intrinsic to the material(1-7). Here, we show that coupling to a magnetic texture can induce both a strong spin-orbit coupling of 1.1 meV and a Zeeman effect in a carbon nanotube. Both of these features are revealed through oscillations of superconductivity-induced subgap states under a change in the magnetic texture. Furthermore, we find a robust zero-energy state-the hallmark of devices hosting localized Majorana modes-at zero magnetic field. Our findings are generalizable to any low-dimensional conductor, and future work could include microwave spectroscopy and braiding operations, which are at the heart of modern schemes for topological quantum computation.
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