Paper
The DX centre
T.N. Morgan
Semiconductor Science and Technology
As a simple prototype of a ferroelectric crystal we treat a system of coupled anharmonic oscillators in order to determine the range of applicability of different self-consistent approximation schemes. In particular, we examine the self-consistent phonon approximation with an intercell coupling which possesses a variable range of interaction. In the limit where the interaction is of sufficiently long range, the density matrix of the system is obtained numerically exactly. © 1974, Taylor & Francis Group, LLC. All rights reserved.
T.N. Morgan
Semiconductor Science and Technology
J.C. Marinace
JES
R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990