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The light-o r radioelectrical effect (RE) (photon drag) in isotropic semiconductors with parabolic conduction band is longitudinal /l/. It is connected, as known, with the fact that with the propagation electromagnetic waves (EMW) free c a r r i e r s absorb both energy and E M W momentum, thereby electrons a r e generated with directed motion, and in this direction a constant voltage arises under open circuit conditions /2 to 7/. At the same time a transverse RE is possible under anisotropic conditions. The effect consists in the appearance of a dc voltage, normal to the light propagation. This can be caused by a manyvalley conduction band /8, 9/ o r by the non-sphericity of the isoenergetical surfaces /9, lo/.In the present note we show that the transverse RE can also take place when the anisotropy of optical properties is induced by polarized laser radiation in an isotropic medium. It is known that intensive EMW may influence the kinetic effects in semiconductors, changing 1) the probability of electron scattering by phonons o r impurities, 2 ) the electron temperature, 3) the carrier concentration in the band (see review /11/), Here we consider only the first factor, which, as will be shown below, is a sufficient condition for the existence of transverse RE. It should be noted that a large number of publications a r e devoted lately to the same photostimulated effects (especially in recent time) /12 to 17/.We examine the system "current c a r r i e r s + scatterers", which is placed i n a linearly polarized EMW field (z(t) = 3 cos wt; $(t) = [i'. g(t)] ) of classical frequency w ( w <(E ; E is an average c a r r i e r energy, h = 1), in a dc electric field Eo and in a strong radiation field $(t) = I ? s i n Q t , which is considered to be a linearly polarized hf field: QT >> 1 ( z is the characteristic relaxation

Short Notes K97 phys. stat. sol. (b) 121, -K97 (1984) Subject classification: 16; 22 V. I. Lenin State University, Kishinev Photostimulated Planar Acoustomagnetoelectric Effect 1) in Semiconductors BY G. M. SHMELEV, G. I. TSURKAN, and NGUYEN QUOC ANH A s is known /1, 2/, the acoustomagnetoelectric (AME) effect consists in the appearance of a dc electric field in Hall direction (relative to the direction of sound propagation) a t zero total current in the sample. The reason of the appearance of the MAE effect is the existence of mutually non-compensated flows of charge c a r r i e r s in Hall direction when the AE current is equal to zero.

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