Appearance of negative differential conductivity in graphene nanoribbons at high-harmonicsa)

dc.contributor.author	Rabiu, M.
dc.contributor.author	Mensah, S. Y.
dc.contributor.author	Abukari, S. S.
dc.date.accessioned	2021-10-04T13:25:28Z
dc.date.available	2021-10-04T13:25:28Z
dc.date.issued	2012
dc.identifier.issn	23105496
dc.identifier.uri	http://hdl.handle.net/123456789/6122
dc.description	6p:, ill.	en_US
dc.description.abstract	We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differential conductivity. Negative differential conductivity appears when bias electric filed is in the neighborhood of applied ac filed amplitude. We also observe both even and odd high-harmonic negative differential conductivity at wave mixing of two commensurate frequencies. The even harmonics are more pronounced than the odd harmonics. A possible use of the present method for generating terahertz frequencies at even harmonics in graphene is suggested	en_US
dc.language.iso	en	en_US
dc.publisher	University of Cape Coast	en_US
dc.subject	Current density	en_US
dc.subject	Bessel function	en_US
dc.subject	Bloch oscillations	en_US
dc.subject	Negative differential conductivity	en_US
dc.title	Appearance of negative differential conductivity in graphene nanoribbons at high-harmonicsa)	en_US
dc.type	Article	en_US