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

Autor:	Behera, Harihar, Mukhopadhyay, Gautam
Rok vydání:	2012
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Physics Letters A 376 (2012) 3287-3289
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physleta.2012.09.038
Popis:	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). Comment: 6 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1211.3034 Zobrazit plný text záznamu View this record from Arxiv