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Condens. Matter 2019, 4(1), 25; https://doi.org/10.3390/condmat4010025

Engineering Topological Nodal Line Semimetals in Rashba Spin-Orbit Coupled Atomic Chains

1
CNR-SPIN, I-84084 Fisciano, Salerno, Italy
2
Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, Via G. Paolo II, 132, I-84084 Fisciano, Salerno, Italy
3
Institute for Theoretical Physics, Center for Extreme Matter and Emergent Phenomena, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
*
Authors to whom correspondence should be addressed.
Received: 30 January 2019 / Revised: 13 February 2019 / Accepted: 15 February 2019 / Published: 16 February 2019
(This article belongs to the Special Issue Majorana Fermions and Topological Materials Science)
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Abstract

In this paper, we study an atomic chain in the presence of modulated charge potential and modulated Rashba spin-orbit coupling (RSOC) of equal periods. We show that for commensurate periodicities, λ = 4 n with integer n, the three-dimensional synthetic space obtained by sliding the two phases of the charge potential and RSOC features a topological nodal-line semimetal protected by an anti-unitary particle-hole symmetry. The location and shape of the nodal lines strongly depend on the relative amplitude between the charge potential and RSOC. View Full-Text
Keywords: topological phases; spin-orbit coupled systems; semimetals topological phases; spin-orbit coupled systems; semimetals
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gentile, P.; Benvenuto, V.; Ortix, C.; Noce, C.; Cuoco, M. Engineering Topological Nodal Line Semimetals in Rashba Spin-Orbit Coupled Atomic Chains. Condens. Matter 2019, 4, 25.

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