Abstract
The dispersion of the dielectric function of InN with the wurtzite structure in the frequency region near the fundamental energy gap has been analyzed with the inclusion of temperature and carrier density effects. The linearity of the electron spectrum in a wide energy range leads to a logarithmic singularity of the real part of the dielectric function, which is associated with the direct electronic transitions and, correspondingly, to an anomalously large dielectric constant. The imaginary part becomes constant above the absorption threshold. The values calculated without any free parameters are in good agreement with the experimental data and ab initio calculations.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. Y. Davydov et al., Phys. Stat. Solidi B 229, R1 (2002).
J. Wu, W. Walukiewicz, K. M. Yu, et al., Appl. Phys. Lett. B 80, 3967 (2002).
Y. Nanishi, Y. Saito, and T. Yamaguchi, Jpn. Appl. Phys., Part 1 42, 2549 (2003).
A. Sher, M. van Schilfgaarde, M. A. Berding, et al., MRS Internet J. Nitride Semicond. Res. 4S1, G5.1 (1999).
F. Bechstedt and J. Furthmüller, J. Cryst. Growth 246, 315 (2002).
J. Wu, W. Walukiewicz, W. Shan, et al., Phys. Rev. B 66, 201403 (2002).
S. P. Fu and Y. F. Chen, Appl. Phys. Lett. 85, 1523 (2004).
P. Rinke, M. Winkelnkemper, A. Qteish, et al., Phys. Rev. B 77, 075202 (2008).
E. O. Kane, J. Phys. Chem. Solids 1, 249 (1957); E. O. Kane, in Band Theory and Transport Properties, Handbook on Semiconductors, Ed. by W. Paul (North-Holand, Amsterdam, 1982), Vol. 1, p. 195.
D. Bagayoko, L. Franklin, H. Jin, and G. L. Zhao, Phys. Rev. B 76, 037101 (2007).
R. Goldhahn, P. Schley, A. T. Winzer, et al., J. Cryst. Growth 288, 273 (2006).
J. Furthmüller, P. H. Hahn, F. Fuchs, and F. Bechstedt, Phys. Rev. B 72, 205106 (2005).
L. A. Falkovsky and A. A. Varlamov, Eur. Phys. J. B 56, 281 (2006); L. A. Falkovsky and S. S. Pershoguba, Phys. Rev. B 76, 153410 (2007).
L. A. Falkovsky, Phys. Rev. B 77, 193201 (2008).
J. S. Thakur, Y. V. Danylyuk, D. Haddat, et al., Phys. Rev. B 76, 035309 (2007).
R. Goldhahn, S. Shokovets, V. Cimalla, et al., Mater. Res. Soc. Symp. Proc. 743, L5.9 (2003).
A. Kasic, E. Valcheva, B. Monemar, et al., Phys. Rev. B 70, 115217 (2004).
R. Goldhahn, A. T. Winzer, V. Cimalla, et al., Superlatt. Microstruct. 36, 591 (2004).
N. E. Christensen and I. Gorczyca, Phys. Rev. B 50, 4397 (1994).
Author information
Authors and Affiliations
Additional information
Original Russian Text © L.A. Falkovsky, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 89, No. 5, pp. 274–278.
Rights and permissions
About this article
Cite this article
Falkovsky, L.A. Singularities of the dielectric function of InN in the region of a direct optical transition. Jetp Lett. 89, 233–237 (2009). https://doi.org/10.1134/S002136400905004X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S002136400905004X