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Majorana fermions in spin-orbit-coupled ferromagnetic Josephson junctions

Black-Schaffer, Annica; Linder, Jacob
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2455150
Date
2011
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  • Publikasjoner fra CRIStin - NTNU [41872]
Original version
10.1103/PhysRevB.84.180509
Abstract
We study all possible Majorana modes in two-dimensional spin-orbit-coupled ferromagnetic superconductor–normal state–superconductor (SNS) Josephson junctions and propose experiments to detect them. With the S region in a nontrivial topological phase and a superconducting phase difference φ=π across the junction, two delocalized Majorana fermions with no excitation gap appear in the N region. In addition, if S and N belong to different topological phases and have well separated the Fermi surfaces, localized Majorana fermions with a finite excitation gap also emerge at both SN interfaces for all φ.
Publisher
American Physical Society
Journal
Physical Review B. Condensed Matter and Materials Physics

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