Condensed Matter Physics, 2015, vol. 18, No. 2, 23702
DOI:10.5488/CMP.18.23702
arXiv:1506.03971
Title:
Electronacoustic phonon field induced tunnel scattering
Author(s):

S.V. Melkonyan
(Department of Physics of Semiconductors \& Microelectronics, Yerevan State University, 1 Alex Manoogian St., 0025 Yerevan, Armenia)
,


A.L. Harutyunyan
(Department of Physics of Semiconductors \& Microelectronics, Yerevan State University, 1 Alex Manoogian St., 0025 Yerevan, Armenia)
,


T.A. Zalinyan
(Department of Physics of Semiconductors \& Microelectronics, Yerevan State University, 1 Alex Manoogian St., 0025 Yerevan, Armenia)

Theory of electronacoustic single phonon scattering has been reconsidered. It is assumed that the nondegenerate semiconductor has a spherical parabolic band structure. In the basis of the reconsideration there is a phenomenon of the tilting of semiconductor bands by the perturbing potential of an electric field. In this case, electron eigenfunctions are not plane waves or Bloch functions. In lowfield regime, the expressions for electron intraband transition probability and scattering time are obtained under elastic collision approximation. Dependencies of scattering time on electron energy and uniform electric field are analyzed. The results of corresponding numerical computations for nSi at 300 K are presented. It is established that there is no fracture on the curve of electron scattering time on the electron energy dependence.
Key words:
tilted band semiconductor, electronacoustic phonon scattering, transition probability, scattering time
PACS:
72.10d, 63.20.kd
