Designing ultrathin and long ferromagnetic nanowires array for Tunable-Range Majorana zero mode studies

Ka Chun Li, Leung Yuk Frank Lam, Xijun Hu, King Cheong Lam, Suet To, Wai Sze Yip (Corresponding Author), Chi Ho Wong (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

We have conducted a study that focuses on designing a quasi-1D ultrathin and long ferromagnetic nanowires array with excellent linearity. The purpose of this design is to test the presence of Majorana zero modes in pairs over a long distance and the influence of the lateral interaction. Specifically, we investigate the magnetic properties of a one-unit cell thick MoSX nanowire array, where dopant X (H, C, N, O, and F. etc) is utilized, to assess its suitability for our intended purposes. Our findings reveal that the edge magnetization of the optimized MoSX nanowires is comparable to that of 3d transition metals with the Curie transition temperature surpassing room temperature. Our study indicates that the ferromagnetism of the optimized MoSX nanowires is unlikely to be eliminated when placed on an s-wave superconductor due to lattice mismatch. By conducting comparative case studies of various dopants, we establish a connection between the source of magnetism in the nanowires and internal electric fields, charge perturbation, spin-orbital coupling and p-d hybridization. The strong exchange interaction, robust spin-orbital coupling and large local magnetic moment exhibited by long and ultrathin room-temperature ferromagnetic nanowires open up avenues for diverse topological applications.

Original languageEnglish
Article number107322
Number of pages5
JournalResults in Physics
Volume56
DOIs
Publication statusPublished - Jan 2024

Keywords

  • Ferromagnetism
  • Magnetic properties
  • Majorana zero modes
  • Ultrathin nanowires

ASJC Scopus subject areas

  • General Physics and Astronomy

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