Atomic-Scale Interface Engineering of Majorana Edge Modes in a 2D Magnet-Superconductor Hybrid System
| Autor: | Eric Mascot, Alexandra Palacio-Morales, Sagen Cocklin, Roland Wiesendanger, Dirk K. Morr, Stephan Rachel, Howon Kim |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Surface (mathematics)
High Energy Physics::Lattice Scanning tunneling spectroscopy Boundary (topology) FOS: Physical sciences 02 engineering and technology 01 natural sciences Atomic units Topological quantum computer Superconductivity (cond-mat.supr-con) Condensed Matter::Superconductivity 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics Research Articles Physics Superconductivity Multidisciplinary Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity High Energy Physics::Phenomenology SciAdv r-articles 021001 nanoscience & nanotechnology Physics::History of Physics MAJORANA Hybrid system 0210 nano-technology Research Article |
| Zdroj: | Science Advances |
| Popis: | Topological superconductors are predicted to harbor exotic boundary states - Majorana zero-energy modes - whose non-Abelian braiding statistics present a new paradigm for the realization of topological quantum computing. Using low-temperature scanning tunneling spectroscopy (STS), we here report on the direct real-space visualization of chiral Majorana edge states in a monolayer topological superconductor, a prototypical magnet-superconductor hybrid system comprised of nano-scale Fe islands of monoatomic height on a Re(0001)-O(2$\times$1) surface. In particular, we demonstrate that interface engineering by an atomically thin oxide layer is crucial for driving the hybrid system into a topologically non-trivial state as confirmed by theoretical calculations of the topological invariant, the Chern number. 26 pages, 9 figures |
| Databáze: | OpenAIRE |
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