Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.117001
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Funding
- Swedish Research Council (Vetenskapradet)
- Goran Gustafsson Foundation
- Swedish Foundation for Strategic Research (SSF)
- Knut and Alice Wallenberg Foundation through the Wallenberg Academy Fellows program
- EU-COST Action [CA-16218]
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We report the emergence of zero-energy states in the trivial phase of a short nanowire junction with a strong spin-orbit coupling and magnetic field, formed by strong coupling between the nanowire and two superconductors. The zero-energy states appear in the junction when the superconductors induce a large energy shift in the nanowire, such that the junction naturally forms a quantum dot, a process that is highly tunable by the superconductor width. Most importantly, we demonstrate that the zero-energy states produce a re shift in the phase-biased supercurrent, which can be used as a simple tool for their unambiguous detection, ruling out any Majorana-like interpretation.
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