The influence of external electric field on acoustoelectric effect in a superlattice

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dc.contributor.author Mensah, S.Y.
dc.contributor.author Allotey, F.K.A.
dc.contributor.author Mensah, N.G.
dc.contributor.author Akrobotu, H.
dc.contributor.author Nkrumah, G.
dc.date.accessioned 2019-03-19T10:01:40Z
dc.date.available 2019-03-19T10:01:40Z
dc.date.issued 2005-02
dc.identifier.other https://doi.org/10.1016/j.spmi.2004.07.003
dc.identifier.other Volume 37, Issue 2, Pages 87-97
dc.identifier.uri http://ugspace.ug.edu.gh/handle/123456789/28689
dc.description.abstract The de acoustoelectric current jac induced by the interaction of acoustic phonons with the conducting electrons is calculated. The calculation is done in the hypersound regime where qℓ ≫ 1 (here q is the acoustic phonon number and t is the electron mean free path). The electric field consists of dc field E0 and a low frequency alternating field E1. A nonlinear dependence of jac on E0 and E1 is observed. Depending on the direction of the dc field E0 the acoustoelectric current can either be positive or negative. At ωq = 1011 s-1 and in the absence of E0, Jac is very small and tends to zero at E1 = 1.3 × 105 V m-1. Further increase of ωq from 1011 s-1 sees a dramatic shoot "up" of Jac. Lastly the acoustoelectric currrent in the presence of E0 is modulated by E1. © 2004 Elsevier Ltd. All rights reserved. en_US
dc.language.iso en en_US
dc.publisher Superlattices and Microstructures en_US
dc.subject Acoustoelectric current en_US
dc.subject Acoustoelectric effect en_US
dc.subject Boltzmann kinetic equation en_US
dc.subject Superlattice en_US
dc.subject Surface acoustic waves en_US
dc.title The influence of external electric field on acoustoelectric effect in a superlattice en_US
dc.type Article en_US


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