Quantum Dot Parity Effects in Trivial and Topological Josephson Junctions
An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating a π junction. When the junction couples topological superconductors, no phase flip is expected. We investigate this and related effects in a full-shell hybrid interferometer, using gate voltage to control dot-j...
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| Veröffentlicht in: | Physical review letters 2020-09, Vol.125 (11), p.1-116803, Article 116803 |
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| container_title | Physical review letters |
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| creator | Razmadze, D. O’Farrell, E. C. T. Krogstrup, P. Marcus, C. M. |
| description | An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating a π junction. When the junction couples topological superconductors, no phase flip is expected. We investigate this and related effects in a full-shell hybrid interferometer, using gate voltage to control dot-junction parity and axial magnetic flux to control the transition from trivial to topological superconductivity. Enhanced zero-bias conductance and critical current for odd parity in the topological phase reflects hybridization of the confined spin with zero-energy modes in the leads. |
| doi_str_mv | 10.1103/PhysRevLett.125.116803 |
| format | Article |
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| ispartof | Physical review letters, 2020-09, Vol.125 (11), p.1-116803, Article 116803 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Critical current (superconductivity) Josephson junctions Magnetic flux Parity Quantum dots Resistance Superconductivity Superconductor junctions Topological superconductors |
| title | Quantum Dot Parity Effects in Trivial and Topological Josephson Junctions |
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