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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Magnetic flux-induced topological superconductivity in magnetic atomic rings
(Submitted on 24 Apr 2024 (v1), last revised 28 Apr 2024 (this version, v2))
Abstract: There have been numerous studies on topological superconductivity in magnetic atomic chains deposited on s-wave superconductors. Most of these investigations have focused on spin-orbit interactions or helical spin orders. In this paper, we propose a new model for achieving one-dimensional topological superconductivity in a magnetic atomic ring. This model utilizes a magnetic field and an antiferromagnetic/ferromagnetic order, under the condition that the magnetic field is perpendicular to the moments of the magnetic order. On a quasi-one-dimensional substrate surface, where the half-filled ring favors an antiferromagnetic configuration, we demonstrate that either the magnetic field itself or a Rashba spin-orbit coupling guarantees the perpendicularity. On a two-dimensional surface, where the ring favors ferromagnetic orders, the perpendicularity is achieved by introducing a minor Rashba spin-orbit coupling.
Submission history
From: Jinpeng Xiao [view email][v1] Wed, 24 Apr 2024 02:45:04 GMT (1300kb,D)
[v2] Sun, 28 Apr 2024 00:45:15 GMT (1300kb,D)
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