Majorana fermions from Shiba states in an antiferromagnetic chain on top of a superconductor
Andreas Heimes, Panagiotis Kotetes, Gerd Schön
DOI 10.1103/PhysRevB.90.060507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We propose a new mechanism for topological superconductivity based on an antiferromagnetically ordered chain of magnetic atoms on the surface of a conventional superconductor. In a weak Zeeman field, a supercurrent in the substrate generates a staggered spin current, which converts the preexisting topologically unprotected Shiba states into Majorana fermions (MFs). The two experimental knobs can be finely tuned providing a platform with enhanced functionality for applications. Remarkably, the electronic spin polarization of the arising edge MF wavefunctions depends solely on the parity of the number of magnetic moments, which can serve as a distinctive signature of the MFs. We introduce the basic concepts within a minimal model and make contact with experiments by a microscopic analysis based on the Shiba states.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Disorder robustness and protection of Majorana bound states in ferromagnetic chains on conventional superconductors
similarity 0.95Oladunjoye A. Awoga et al.
Source status unknown — claims are unverified
High-temperature Majorana fermions in magnet-superconductor hybrid systems
similarity 0.95Daniel Crawford et al.
Source status unknown — claims are unverified
Proposal for realizing Majorana fermions in chains of magnetic atoms on a superconductor
similarity 0.95S. Nadj-Perge et al.
Source status unknown — claims are unverified
Majorana fermions at the edge of superconducting islands
similarity 0.95R. S. Akzyanov et al.
Source status unknown — claims are unverified
Topological properties of chains of magnetic impurities on a superconducting substrate: Interplay between the Shiba band and ferromagnetic wire limits
similarity 0.95Gian Marcello Andolina & Pascal Simon
Source status unknown — claims are unverified
Self-organized topological state in a magnetic chain on the surface of a superconductor
similarity 0.93I. Reis et al.
Source status unknown — claims are unverified