ICTS:29154

Video URL

CT-Majorana orbitals, Narrow-bands and Topology in Z2-flux Superlattices in a Finite-field Kitaev m…

CT-Majorana orbitals, Narrow-bands and Topology in Z2-flux Superlattices in a Finite-field Kitaev model

(2024). CT-Majorana orbitals, Narrow-bands and Topology in Z2-flux Superlattices in a Finite-field Kitaev model. SciVideos. https://youtu.be/u17AAC6Umxw

CT-Majorana orbitals, Narrow-bands and Topology in Z2-flux Superlattices in a Finite-field Kitaev model. SciVideos, Jul. 22, 2024, https://youtu.be/u17AAC6Umxw 

          @misc{ scivideos_ICTS:29154,
            doi = {},
            url = {https://youtu.be/u17AAC6Umxw},
            author = {},
            keywords = {},
            language = {en},
            title = {CT-Majorana orbitals, Narrow-bands and Topology in Z2-flux Superlattices in a Finite-field Kitaev model},
            publisher = {},
            year = {2024},
            month = {jul},
            note = {ICTS:29154 see, \url{https://scivideos.org/icts-tifr/29154}}
          }
Yogendra K B
Talk numberICTS:29154
Source RepositoryICTS-TIFR
Source EventEngineered 2D Quantum Materials
Collection

Abstract

Inspired by the observation of crystallization of the vortices in the intermediate field range in a Kitaev model [Phys. Rev B 108, 165118 (2023)], we delve into obtaining different superlattice formations of the vortices and the corresponding Majorana dispersions. This gives a novel possibility of governing flat bands for Majoranas and other possible excitations that may arise in analogous settings. We find several superlattice configurations of vortices where Majorana states are weakly dispersive or even fully flat with or without a gap. The gapped flat bands have a non-zero Chern number with a higher quantum metric value (bandwidth) tunable by varying applied magnetic fields. Having satisfied the ‘vortexibility condition,’ these bands can harbor fractional Chern insulator phase of the emergent Majorana fermions if appropriate interactions are present. Interestingly, we have used the projection method and maximally localized Wannier functions algorithm to identify the localizing c...