Topological properties of the bond-modulated honeycomb lattice

被引：18

作者：

Grandi, F. ^{[1
,2
]}

Manghi, F. ^{[1
,3
]}

Corradini, O. ^{[1
,4
]}

Bertoni, C. M. ^{[1
,3
]}

机构：

[1] Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy

[2] SISSA, I-34136 Trieste, Italy

[3] CNR, Ist Nanosci, Ctr S3, I-41125 Modena, Italy

[4] Univ Autonoma Chiapas, Fac Ciencias Fis & Matemat, Tuxtla Gutierrez 29050, Mexico

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 11期

关键词：

MODEL;

D O I：

10.1103/PhysRevB.91.115112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the combined effects of lattice deformation, e-e interaction, and spin-orbit coupling in a two-dimensional (2D) honeycomb lattice. We adopt different kinds of hopping modulation-generalized dimerization and a Kekule distortion-and calculate topological invariants for the noninteracting system and for the interacting system. We identify the parameter range (Hubbard U, hopping modulation, spin-orbit coupling) where the 2D system behaves as a trivial insulator or quantum spin Hall insulator.

引用

页数：7

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