BROWSE

Related Scientist

Researcher

강상관계 물질 연구단
강상관계 물질 연구단
more info

Chern insulator with a nearly flat band in the metal-organic- framework-based Kagome lattice

Cited 0 time in webofscience Cited 0 time in scopus
11 Viewed 2 Downloaded
Title
Chern insulator with a nearly flat band in the metal-organic- framework-based Kagome lattice
Author(s)
Santu Baidya; Seungjin Kang; Choong H. Kim; Jaejun Yu
Publication Date
2019-09
Journal
SCIENTIFIC REPORTS, v.9, no., pp.13807 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Based on first-principles density-functional theory (DFT) calculations, we report that the transitionmetal bis-dithiolene, M3C12S12 (M= Mn and Fe), complexes can be a two-dimensional (2D) ferromagnetic insulator with nontrivial Chern number. Among various synthetic pathways leading to metal bis-dithiolenes, the simplest choice of ligand, Benzene-hexathiol, connecting metal cations to form a Kagome lattice is studied following the experimental report of time-reversal symmetric isostructural compound Ni3C12S12. We show sulfur and carbon-based ligands play the key role in making the complexes topologically nontrivial. An unusual topological quantum phase transition induced by the on-site Coulomb interaction brings a nearly flat band with a nonzero Chern number as the highest occupied band. With this analysis we explain the electronic structure of the class M3C12S12 and predict the existence of nearly flat band with nonzero Chern number and it can be a fractional Chern insulator candidate with carrier doping. © The Author(s) 2019
URI
https://pr.ibs.re.kr/handle/8788114/6433
ISSN
2045-2322
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
Chern insulator with a nearly flat band in the metal-organic-framework-based Kagome lattice.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse