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Journal Article

Pressure dependence of optical phonons in ZnCdSe alloys

MPS-Authors
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Camacho,  J.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Loa,  I.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Syassen,  K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;
Department Solid State Quantum Electronics (Jochen Mannhart), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Camacho, J., Loa, I., Cantarero, A., Syassen, K., Hernández-Calderón, I., & González, L. (2003). Pressure dependence of optical phonons in ZnCdSe alloys. physica status solidi (b), 235(2), 432-436.


Cite as: https://hdl.handle.net/21.11116/0000-000E-F987-1
Abstract
We report on resonant Raman scattering measurements under
hydrostatic pressure and at low temperature on two ZnxCd1-xSe
alloy films, which were grown by different epitaxial techniques
on GaAs. This ternary alloy exhibits an intermediate (I) mode
between the typical transverse (TO) and longitudinal optical
(LO) modes of the zinc-blende structure. The shift of the
vibrational frequencies of the three modes with pressure is
analyzed. The Gruneisen parameters of these three optical modes
are determined. Moreover, overtones of the LO modes as well as
TO + nLO and I + nLO zone-center phonon combinations are
observed.