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

Show simple item record Mensah, S.Y. Allotey, F.K.A. Mensah, N.G. Akrobotu, H. Nkrumah, G. 2019-03-19T10:01:40Z 2019-03-19T10:01:40Z 2005-02
dc.identifier.other Volume 37, Issue 2, Pages 87-97
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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