ACOUSTOMAGNETOELECTRIC EFFECT IN A SUPERLATTICE

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ACOUSTOMAGNETOELECTRIC EFFECT IN A SUPERLATTICE

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dc.contributor.author Nguyen, Quang Bau
dc.contributor.author et al.
dc.date.accessioned 2011-06-08T14:12:43Z
dc.date.available 2011-06-08T14:12:43Z
dc.date.issued 2009
dc.identifier.citation 131-136 vi
dc.identifier.issn 0866-8612
dc.identifier.uri http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/12107
dc.description.abstract The acoustomagnetoelectric (AME) effect in a superlattice (SL) is investigated for an acoustic wave whose wavelength $\lambda =2\pi/q$ is smaller than the mean free path $l$ of the electrons and hypersound in the region $ql\gg1$ (where $q$ is the acoustic wave number) . The analytical expression for the AME current $j^{AME}$ is calculated in the case of relaxation time of momentum $\tau$ is constant approximation. The result indicates that the existense of $j^{AME}$ in a SL may be due to the finite gap band , and the periodicity of the electron spectrum along the SL axis. Numerical calculations have been done and the result is analysed for the GaAs/AlAs SL. All the results are compared with the normal bulk semiconductors (both theory and experiment) in the weak magnetic field region to show the difference. vi
dc.language.iso en vi
dc.publisher Tạp chí Khoa học vi
dc.title ACOUSTOMAGNETOELECTRIC EFFECT IN A SUPERLATTICE vi
dc.type Article vi

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