Controlling the quantum spin Hall edge states in two-dimensional transition metal dichalcogenides
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{
"updated": "2020-12-06T10:46:14.835592+00:00",
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"contributors": [
{
"givennames": "Artem",
"familyname": "Pulkin",
"affiliations": [
"Institute of Physics, Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
],
"email": "gpulkin@gmail.com"
},
{
"givennames": "Oleg V.",
"familyname": "Yazyev",
"affiliations": [
"Institute of Physics, Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
],
"email": "oleg.yazyev@epfl.ch"
}
],
"conceptrecid": "674",
"doi": "10.24435/materialscloud:cg-q0",
"references": [
{
"url": "https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.0c00859",
"citation": "A. Pulkin, O. V. Yazyev, J. Phys. Chem. Lett. 11, 6964\u20136969 (2020)",
"type": "Journal reference",
"doi": "10.1021/acs.jpclett.0c00859"
},
{
"url": "https://arxiv.org/abs/1907.12481",
"citation": "A. Pulkin, O. V. Yazyev, arXiv:1907.12481 (2019)",
"type": "Preprint"
}
],
"title": "Controlling the quantum spin Hall edge states in two-dimensional transition metal dichalcogenides",
"publication_date": "Dec 06, 2020, 11:46:14",
"description": "Two-dimensional transition metal dichalcogenides (TMDs) of Mo and W in their 1T\u2032 crystalline phase host the quantum spin Hall (QSH) insulator phase. We address the electronic properties of the QSH edge states by means of first-principles calculations performed on realistic models of edge terminations of different stoichiometries. The QSH edge states show a tendency to have complex band dispersions and coexist with topologically trivial edge states. We nevertheless identify two stable edge terminations that allow isolation of a pair of helical edge states within the band gap of TMDs, with monolayer 1T\u2032-WSe2 being the most promising material. We also characterize the finite-size effects in the electronic structure of 1T\u2032-WSe2 nanoribbons. Our results provide guidance to the experimental studies and possible practical applications of QSH edge states in monolayer 1T\u2032-TMDs.",
"mcid": "2020.161",
"edited_by": 100,
"version": 1,
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"keywords": [
"transition metal dichalcogenides",
"quantum spin Hall effect",
"edge states",
"topological insulators",
"2D materials",
"SNSF",
"MARVEL",
"ERC",
"EPFL"
],
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"license": "Creative Commons Attribution 4.0 International"
},
"revision": 4,
"created": "2020-12-04T23:56:34.164883+00:00"
}