View : 91 Download: 0

Realization of Weyl semimetal phase in a non-centrosymmetric superlattice in Kane-Mele mode

Title
Realization of Weyl semimetal phase in a non-centrosymmetric superlattice in Kane-Mele mode
Authors
Shin, JiseonJeon, Gun Sang
Ewha Authors
전건상
SCOPUS Author ID
전건상scopus
Issue Date
2019
Journal Title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN
0953-8984JCR Link

1361-648XJCR Link
Citation
JOURNAL OF PHYSICS-CONDENSED MATTER vol. 31, no. 25
Keywords
Z(2) topological insulatorWannier charge centerWeyl semimetalsuperlattice
Publisher
IOP PUBLISHING LTD
Indexed
SCI; SCIE; SCOPUS WOS
Document Type
Article
Abstract
We investigate a superlattice alternately composed of quantum spin Hall insulators in Kane-Mele model and two-dimensional normal insulators due to the staggered lattice potential. The staggered lattice potential in normal insulators as a spacer layer has a role of breaking an inversion symmetry in current study. We show a realization of Weyl semimetal (WSM) phase in a finite region and a phase transition to a weak topological insulator. We estimate Z(2) topological invariants by means of Wannier charge center method which is practical for non-centrosymmetric topological insulators. We also discuss Fermi arcs and chiral charges of WSM phase in surface Brillouin zone.
DOI
10.1088/1361-648X/ab0ceb
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE