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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2006. V. 9, N 4. P. 007-011.
Polarizability of D+X complex in bulk semiconductors
Faculté des sciences, Département de Physique, B.P. 2121, Tétouan, Morocco
Abstract. The electric polarizability α of ionized-donor-bound exciton D+
X in bulk semiconductor is calculated for all values of the effective electron-to-hole mass ratio σ
included in the range of stability (σ<σχ). The calculation is performed within the
variational method by using 56-term wave function. An asymptotic behavior of α in the
vicinity of the critical value σc is deduced. We have also calculated the limiting value σ
for which the polarizability equals that of D− system.
Keywords: exciton, polarizability, wave function, variational method.
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