Signatures of interfacial topological chiral modes via RKKY exchange interaction in Dirac and Weyl systems

Ganesh C Paul, SK Firoz Islam*, Paramita Dutta, Arijit Saha

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

We theoretically investigate the features of Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange interaction between two magnetic impurities, mediated by the interfacial bound states inside a domain wall (DW). The latter separates the two regions with oppositely signed inversion symmetry broken terms in graphene and Weyl semimetal. The DW is modeled by a smooth quantum well which hosts a number of discrete bound states including a pair of gapless, metallic modes with opposite chiralities. We find clear signatures of these interfacial chiral bound states in spin response (RKKY exchange interaction) which is robust to the deformation of the
quantum well.
Original languageEnglish
Article number115306
Pages (from-to)1-7
Number of pages7
JournalPhysical Review B
Volume103
Issue number11
DOIs
Publication statusPublished - 12 Mar 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Weyl
  • Dirac materials

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