Quantum spin Hall effect on germanene nanoroad embedded in a completely hydrogenated germanene

Abstract

We show that germanene nanoroads embedded in a completely hydrogenated germanene (germanane) exhibits a quantum spin Hall effect (QSHE). These nanoroads can be obtained experimentally by local hydrogen dissociation from germanane. Using first principle calculations we predict that germanene nanoroads with zigzag interfaces show dissipationless conducting channels with in-plane and out-of-plane spin textures.

5 pages, 5 figures

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Cited by in corpus (3)

• Large Enhancement and Tunable Band Gap in Silicene by Small Organic Molecule Adsorption
• Quantum spin Hall states in graphene interacting with WS${}_2$ or WSe${}_2$
• Electrically Engineered Band Gap in Two-Dimensional Ge, Sn, and Pb: A First-Principles and Tight-Binding Approach