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Topological Dirac nodal loops in nonsymmorphic hydrogenated monolayer boron

Cuong, NT; Tateishi, I; Cameau, M; Niibe, M; Umezawa, N; Slater, B; Yubuta, K; ... Matsuda, I; + view all (2020) Topological Dirac nodal loops in nonsymmorphic hydrogenated monolayer boron. Physical Review B , 101 (19) , Article 195412. 10.1103/PhysRevB.101.195412. Green open access

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Abstract

The existence of a topological Dirac nodal loop is predicted for hydrogenated monolayer boron sheets with a nonsymmorphic symmetry. The three-center two-electron bonds in boron compounds restrict the electronic system to be insulating or semimetallic with a Dirac nodal loop. Two types of electronic structures are distinguished by the Z_2 topological index and confirmed by first-principles total-energy calculations. The topological taxonomy, developed in this research, can be applied to other two-dimensional materials and to seek novel Dirac fermions.

Type: Article
Title: Topological Dirac nodal loops in nonsymmorphic hydrogenated monolayer boron
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.101.195412
Publisher version: https://doi.org/10.1103/PhysRevB.101.195412
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10101771
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