Strain-tunable band parameters of ZnO monolayer in graphene-like honeycomb structure

Abstract

We present ab initio calculations which show that the direct-band-gap, effective masses and Fermi velocities of charge carriers in ZnO monolayer (ML-ZnO) in graphene-like honeycomb structure are all tunable by application of in-plane homogeneous biaxial strain. Within our simulated strain limit of $\pm 10$%, the band gap remains direct and shows a strong non-linear variation with strain. Moreover, the average Fermi velocity of electrons in unstrained ML-ZnO is of the same order of magnitude as that in graphene. The results promise potential applications of ML-ZnO in mechatronics/straintronics and other nanodevices such as the nano-electromechanical systems (NEMS) and nano-optomechanical systems (NOMS).

arXiv comment6 pages, 5 figures

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Cited by in corpus (2)

• Tailoring the structural and electronic properties of graphene-like ZnS monolayer using biaxial strain
• Strain-tunable energy band parameters of graphene-like GaN