Spin-dependent signatures of Majorana vortex fusion within planar Josephson junctions
File(s)
Published version
Author(s)
Ganesh, Krishnan
Lee, Derek KK
Pachos, Jiannis K
Type
Journal Article
Abstract
We investigate the magnetic characteristics and tunneling signatures of a planar Josephson junction with Rashba spin-orbit coupling during the fusion of two Majorana vortices. By employing the topological phase diagram and conducting tight-binding simulations of the proposed device, we demonstrate that this fusion process induces a parity-dependent magnetic moment aligned with the junction axis. We further propose a method to probe the spin properties of the fusing Majorana zero modes through spin-resolved Andreev conductance measurements at the junction endpoints. To support our findings, we derive a low-energy effective Hamiltonian that provides a detailed microscopic description of the numerically observed phenomena. Our analysis enables the detection of Majorana fusion outcome from accessible spin current measurements, thus paving the way for future experimental verification and potential applications in topological quantum computation.
Date Issued
2025-03-21
Date Acceptance
2025-03-14
Citation
PHYSICAL REVIEW B, 2025, 111 (9)
ISSN
2469-9950
Publisher
AMER PHYSICAL SOC
Journal / Book Title
PHYSICAL REVIEW B
Volume
111
Issue
9
Copyright Statement
Published by the American Physical Society Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
License URL
Subjects
Materials Science
Materials Science, Multidisciplinary
Physical Sciences
Physics
Physics, Applied
Physics, Condensed Matter
Science & Technology
Technology
TOPOLOGICAL SUPERCONDUCTIVITY
Publication Status
Published
Article Number
094522
Date Publish Online
2025-03-21