ZhETF, Vol. 131,
p. 155 (January 2007)
(English translation - JETP,
Vol. 104, No. 1,
available online at www.springer.com
LASER-INDUCED CONDUCTIVITY OF SEMICONDUCTORS AT LOW TEMPERATURES
Baturin A.S., Belousov Yu.M., Gorelkin V.N., Krainov V.P., Rastunkov V.S.
Received: August 18, 2006
PACS: 76.75.+i, 72.20.-i, 72.20.My, 72.40.+w
We consider the negative conductivity of electrons in semiconductors excited by a picosecond laser pulse at low temperatures, due to the inelastic electron-phonon collisions. For the first time, the dependence of the deformation potential on the phonon wave number is taken into account. This dependence significantly changes the region of negative electron conductivity as a function of the phonon temperature.