Amplification of acoustic waves in armchair graphene nanoribbon in the presence of external electric and magnetic fields

dc.contributor.author	Dompreh, K.A.
dc.contributor.author	Mensah, S.Y.
dc.contributor.author	Abukari, S.S.
dc.contributor.author	Sam, F.
dc.contributor.author	Mensah, N.G.
dc.date.accessioned	2021-10-04T12:32:16Z
dc.date.available	2021-10-04T12:32:16Z
dc.date.issued	2015
dc.identifier.issn	23105496
dc.identifier.uri	http://hdl.handle.net/123456789/6118
dc.description	6p:, ill.	en_US
dc.description.abstract	Amplification of acoustic waves in Armchair Graphene Nanoribbon (AGNR) in the presence of an external electric and magnetic fields was studied using the Boltzmann's kinetic equation. The general expression for the amplification (Γ Γ ) was obtained in the region ql⪢1 for the energy dispersion ε (→p ) near the Fermi point. For various parameters of the quantized wave vector (β), the graphs of Γ⊥/Γ0 against the electric field (→ Ex), the acoustic wave-number ( → q ), the energy gap (Eg) and the dimensionless factor (Ωτ0) were numerically analyzed. The results showed a linear relation for Γ⊥/Γ0 with → Ex but non-linear for → q and Ωτ0. The observed amplification can lead to SASER in Armchair Graphene Nanoribbon (AGNR)	en_US
dc.language.iso	en	en_US
dc.publisher	University of Cape Coast	en_US
dc.subject	Amplification	en_US
dc.subject	Armchair	en_US
dc.subject	Nanoribbon	en_US
dc.subject	Graphene	en_US
dc.title	Amplification of acoustic waves in armchair graphene nanoribbon in the presence of external electric and magnetic fields	en_US
dc.type	Article	en_US