Topological state engineering by potential impurities on chiral superconductors

Vardan Kaladzhyan, Joel Röntynen, Pascal Simon, Teemu Ojanen*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
146 Downloads (Pure)

Abstract

In this work we consider the influence of potential impurities deposited on top of two-dimensional chiral superconductors. As discovered recently, magnetic impurity lattices on an s-wave superconductor may give rise to a rich topological phase diagram. We show that a similar mechanism takes place in chiral superconductors decorated by nonmagnetic impurities, thus avoiding the delicate issue of magnetic ordering of adatoms. We illustrate the method by presenting the theory of potential impurity lattices embedded on chiral p-wave superconductors. While a prerequisite for the topological state engineering is a chiral superconductor, the proposed procedure results in vistas of nontrivial descendant phases with different Chern numbers.

Original languageEnglish
Article number060505
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B
Volume94
Issue number6
DOIs
Publication statusPublished - 11 Aug 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • MAJORANA FERMIONS
  • BOUND-STATES

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