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