Supercurrent transport through 1e -periodic full-shell Coulomb islands
We experimentally investigate supercurrent through Coulomb islands, where island and leads are fabricated from semiconducting nanowires with fully surrounding superconducting shells. Applying flux along the wire yields a series of destructive Little-Parks lobes with reentrant supercurrent. We find C...
| Authors: | , , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2024 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/393468 |
| Online Access: | http://hdl.handle.net/10261/393468 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184146518&doi=10.1103%2fPhysRevB.109.L041302&partnerID=40&md5=931d97d281ccc3133fb122c9c308fef2 |
| Access Level: | Open access |
| Keyword: | Bound states Coulomb blockade Density of states Josephson effect Superconductivity Josephson junctions Nanowires Quantum dots |
| Summary: | We experimentally investigate supercurrent through Coulomb islands, where island and leads are fabricated from semiconducting nanowires with fully surrounding superconducting shells. Applying flux along the wire yields a series of destructive Little-Parks lobes with reentrant supercurrent. We find Coulomb blockade with 2e peak spacing in the zeroth lobe and 1e average spacing, with regions of significant even-odd modulation, in the first lobe. Evolution of Coulomb-peak amplitude through the first lobe is consistent with a theoretical model of supercurrent carried predominantly by zero-energy states in the leads and the island. © 2024 American Physical Society. |
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