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	2021-10-28T13:07:50Z
dc.date.available	2021-10-28T13:07:50Z
dc.date.issued	2003
dc.identifier.issn	23105496
dc.identifier.uri	http://hdl.handle.net/123456789/6310
dc.description	13p:, ill.	en_US
dc.description.abstract	The dc acoustoelectric current J" induced by the interaction of acoustic phonons with the conducting electrons is calculated. The calculation is done in the hypersound regime where q > I (here q is the acoustic phonon number and is the electron mean free path). The electric field consists of dc field E and a low frequency alternating field El. A nonlinear dependence of J'c on E and El is observed. Depending on the direction of the dc field E the acoustoelectric current can either be positive or negative. At wq = 101'sec-1 and in the absence of E0, jac is 105V - 1. Further increase Of Wq -1 very small and tends to zero at El = 13 x from 101'sec sees a dramatic shoot "up" of Jc. Lastly the acoustoelectric current in the presence of E is modulated by El	en_US
dc.language.iso	en	en_US
dc.publisher	University of Cape Coast	en_US
dc.title	The influence of external electric field on acoustoelectric effect in a superlattice	en_US
dc.type	Article	en_US