Wednesday, November 14, 2012

1211.3034 (Harihar Behera et al.)

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

Harihar Behera, Gautam Mukhopadhyay
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).
View original: http://arxiv.org/abs/1211.3034

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