Josephson current in a quantum dot coupled to a topological superconducting α-helical protein
| Autor: | Han-Zhao Tang, Xue-Wen Guo, Guan-Jun Ding |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Physics Superconductivity Quantitative Biology::Biomolecules Phase transition Zero mode Field (physics) Phase (waves) 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Topology 01 natural sciences MAJORANA Quantum dot Condensed Matter::Superconductivity 0103 physical sciences General Materials Science 0210 nano-technology Leakage (electronics) |
| Zdroj: | Applied Physics A. 127 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s00339-021-04643-1 |
| Popis: | We investigate the topological properties of a topological superconducting α-helical protein. It is shown that the Majorana zero modes can be formed at both ends of the topological superconducting α-helical protein with non-trivial phase. Our results indicate that the gate field can affect the topological phase. Employing Green’s function method, we investigate the Josephson current through a quantum dot side coupled to a topological superconducting α-helical protein. Due to leakage of the Majorana zero mode, the Josephson current shows a trivial/non-trivial phase transition. The results can be used to probe the existence of the Majorana zero mode in protein. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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