Optical phonon decay in bulk aluminum nitride

D. Y. Song; M. Holtz; A. Chandolu; S. A. Nikishin; E. N. Mokhov; Yu Makarov; H. Helava

doi:10.1063/1.2219092

Optical phonon decay in bulk aluminum nitride

D. Y. Song, M. Holtz, A. Chandolu, S. A. Nikishin, E. N. Mokhov, Yu Makarov, H. Helava

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We report Raman studies of the E ₂ ² and A ₁(LO) symmetry phonons of bulk A1N from 13 to 375 K. Based on observed dependences of the phonon energies and linewidths, and accounting for the temperature-dependent thermal expansion, we determine that both phonon lifetimes are limited by two-phonon decay. The E ₂ ² decays symmetrically. The A ₁(LO) asymmetrically decays into vibrations with energies 586 and 309 cm ^-1 which we attribute to A ₁(TO) and LA phonons from the M point of the Brillouin zone.

Original language	English
Article number	021901
Journal	Applied Physics Letters
Volume	89
Issue number	2
DOIs	https://doi.org/10.1063/1.2219092
State	Published - 2006

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abstract = "We report Raman studies of the E 2 2 and A 1(LO) symmetry phonons of bulk A1N from 13 to 375 K. Based on observed dependences of the phonon energies and linewidths, and accounting for the temperature-dependent thermal expansion, we determine that both phonon lifetimes are limited by two-phonon decay. The E 2 2 decays symmetrically. The A 1(LO) asymmetrically decays into vibrations with energies 586 and 309 cm -1 which we attribute to A 1(TO) and LA phonons from the M point of the Brillouin zone.",

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T1 - Optical phonon decay in bulk aluminum nitride

AU - Song, D. Y.

AU - Holtz, M.

AU - Chandolu, A.

AU - Nikishin, S. A.

AU - Mokhov, E. N.

AU - Makarov, Yu

AU - Helava, H.

PY - 2006

Y1 - 2006

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AB - We report Raman studies of the E 2 2 and A 1(LO) symmetry phonons of bulk A1N from 13 to 375 K. Based on observed dependences of the phonon energies and linewidths, and accounting for the temperature-dependent thermal expansion, we determine that both phonon lifetimes are limited by two-phonon decay. The E 2 2 decays symmetrically. The A 1(LO) asymmetrically decays into vibrations with energies 586 and 309 cm -1 which we attribute to A 1(TO) and LA phonons from the M point of the Brillouin zone.

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