The effect of the charge acoustoelectric transport is connected with the possibility of intensification of waves by electric field and has been in detail investigated for volume and surface waves. The transport of electrons by transverse acoustoelectric wave of Stonely type, spreading along the heterocontact boundary of the piezosemiconductors layers, is being considered for the first time. The analytical expressions have been derived for the compounds of the acoustoelectric conductivity tensor, depending on the wave phase velocity and electron drift velocity in the outward electric field. It has been shown that the alternating current is the sum of two surface currents. One of them is the drift current, which linearly depends on the outward electric field and another one nonlinearly depends on this field. The expression has been derived for the acoustoelectric mobility of electrons. It has been explained that the current, created by the wave of electronic density indefinitely increases, when the drift velocity of electrons becomes equal to the wave phase velocity. The derived analytic expressions for the mobility and the current densities may be used for calculation of the current-voltage characteristics of the Stonely wave field-effect acoustoelectric devices.
1. Мороча А.К., Рожков А.С. О существовании поперечных акустоэлектрических волн типа Стоунли и возможности их применения в акустонаноэлектронике // Изв. вузов. Электроника.– 2017.– Т. 22. – №1. – С. 7–14.
2. Hoskins M.J., Marcos H., Hunsiger. Charge transport by surface acoustic waves in GaAs //Appl. Phys. Lett. – 1982. – Vol. 41. – P. 332 – 336.
3. Heterostructure acoustic charge transport devices on molecular beam epitaxial grown GaAS/AlGaAS epitaxial layers / W.J. Tanski, R.N. Sacks, S.W. Marrit et all. // J. of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. – 1990. – Vol. 8. – No. 1, 2. – P. 352–354.
4. Бугаев А.С., Гуляев Ю.В., Сухацкий И.И. Приборы с акустическим переносом за-ряда // Зарубежная радиоэлектроника. – 1991. –№3. – С. 23–35.
5. Мороча А.К. Новые типы поверхностных акустоэлектрических волн и акустический перенос заряда в кристаллах GaAs// Изв. вузов. Электроника.– 2014. – №2(106). – С. 3–15.