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Hybridization Effects of Normal Insulator on Two-Dimensional Topological Insulator

Title
Hybridization Effects of Normal Insulator on Two-Dimensional Topological Insulator
Authors
Shin J.Jeon G.S.
Ewha Authors
전건상
SCOPUS Author ID
전건상scopus
Issue Date
2019
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
Journal of the Korean Physical Society vol. 74, no. 1, pp. 41 - 47
Keywords
Edge statesSpin-orbit couplingTopological insulator
Publisher
The Korean Physical Society
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Document Type
Review
Abstract
We consider a geometry where a quantum spin Hall insulator and a normal insulator are in contact with each other on the same plane. We show that our numerical results in finite-system approach agree with analytic results of an earlier work in a quantum spin Hall insulator. We discuss the effects of properties of normal insulators on the probability density of edge states at the interface. The edge-state width is computed by varying the interface hopping and the staggered lattice potential. We also attempt to explain the energy dispersions of edge states by constructing effective Hamiltonian and discuss its validity. © 2019, The Korean Physical Society.
DOI
10.3938/jkps.74.41
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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