# Theoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenides

@article{Yan2010TheoreticalPO, title={Theoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenides}, author={Binghai Yan and Chaoxing Liu and Hai-Jun Zhang and Chiyung Yam and Xiao-liang Qi and Thomas Frauenheim and Shou-Cheng Zhang}, journal={EPL}, year={2010}, volume={90}, pages={37002} }

We predict a new class of three-dimensional topological insulators in thallium-based III-V-VI2 ternary chalcogenides, including TlBiQ2 and TlSbQ2 (Q=Te, Se and S). These topological insulators have robust and simple surface states consisting of a single Dirac cone at the ? point. The mechanism for topological insulating behavior is elucidated using both first-principle calculations and effective field theory models. Remarkably, one topological insulator in this class, TlBiTe2, is also a…

## 93 Citations

Three-dimensional topological insulators in I-III-VI2 and II-IV-V2 chalcopyrite semiconductors.

- Physics, Materials SciencePhysical review letters
- 2011

It is shown that a large number of chalcopyrites can realize the topological insulating phase in their native states and become appealing candidates for novel spintronics devices.

Synthesis and characterization of 3D topological insulators: a case TlBi(S1−xSex)2

- Materials Science, MedicineScience and technology of advanced materials
- 2015

Practical methods for synthesizing Tl-based ternary III-V-VI2 chalcogenide TlBi(S Sex)2 are described in detail, along with characterization by x-ray diffraction and charge transport properties.

Prediction of topological insulators in supercubane-like materials based on first-principles calculations.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2016

It is found that the hydrostatic strain cannot induce a quantum phase transition between topological trivial and nontrivial state for both C8 and Si8, while for Ge8 and Sn8 the tensile strain can play a unique role in tuning the band topology, which will lead to a topological nontrivials state with Z2 invariants.

Prediction of weak topological insulators in layered semiconductors.

- Materials Science, PhysicsPhysical review letters
- 2012

The reported honeycomb compounds can serve as prototypes to aid in the finding of new weak topological insulators in layered small-gap semiconductors.

Emergence of topological and topological crystalline phases in TlBiS2 and TlSbS2

- Physics, MedicineScientific reports
- 2015

TlBiS2 shows normal, topological, and topological crystalline insulator phases under hydrostatic pressure, thus being the first compound to exhibit a phase transition from a topological to a topology crystalline Insulator.

Spin- and angle-resolved photoemission on the topological Kondo insulator candidate: SmB6.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2016

This topical review focuses on recent advances in the study of SmB6, the most promising candidate for a topological Kondo insulator, from the perspective of spin- and angle-resolved photoemission spectroscopy with highlights of some important transport results.

Topological insulators and superconductors

- Physics
- 2011

Topological insulators are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in the…

Topologically nontrivial narrow bands in ultrathin SnTe films with defect superstructures.

- Medicine, PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2014

It is shown that a two-dimensional topological insulator can be realized and the band topology may be further controlled by charge doping in an ultrathin SnTe film with a defect superstructure and it is demonstrated that a transition between a topological Insulator and a normal insulator is possible under the electron or hole doping which can be useful for controlling the topological edge states.

Topological phase transition and quantum spin Hall state in TlBiS2

- Physics
- 2014

We have investigated the bulk and surface electronic structures and band topology of TlBiS2 as a function of strain and electric field using ab-initio calculations. In its pristine form, TlBiS2 is a…

Quantum anomalous Hall effect in doped ternary chalcogenide topological insulators TlBiTe2 and TlBiSe2

- Materials Science
- 2011

Ternary Chalcogenide TlBiTe2 and TlBiSe2 have been proved to be promising topological insulators. In the present work, the occurrence of quantum anomalous Hall effect for a model Hamiltonian with…

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