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    • End modes in arrays of modulated Su--Schrieffer--Heeger chains

      BRAJESH NARAYAN

      Research Article Volume 87 Issue 2 August 2016 Article ID 0025

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/087/02/0025

    • Keywords

       

      Su--Schrieffer--Heeger model, topological insulator, tight binding method

    • Abstract

       

      In this article, an extended and modulated version of the classic Su--Schrieffer--Heeger model is analysed. The nature of the end modes and the effect of cyclic modulation of the hopping parameters are studied in detail. The analysis is extended to the case of an array of linear chains described by the Su--Schrieffer--Heeger model, where the robustness of the end states for a large range of coupling strengths between the chains is found.

    • Author Affiliations

       

      BRAJESH NARAYAN1

      1. Amity Institute for Applied Sciences, Amity University, Sector 125, Noida 201 313, India

    • Dates

       
      Published
      15 August 2016
      Manuscript received
      25 December 2014
      Manuscript revised
      16 August 2015
      Accepted
      1 October 2015
      Final version published online
      15 July 2016

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