Authors: Nikolić, Pantelija
Vasiljević-Radović, Dana
Radulović. Katarina
Bojičić, A.
Luković, D.
Savić, Slavica
Blagojević, Vladimir
Vujatović, Stevan
Lukić, Lazar
Urošević, Dragan 
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: Anisotropy in thermal and electronic properties of single crystal GaSe determined by the photoacoustic method
Journal: Journal De Physique. IV : JP
Volume: 125
First page: 427
Last page: 429
Issue Date: 1-Jan-2005
Rank: M23
ISSN: 1155-4339
DOI: 10.1051/jp4:2005125100
Anisotropy in thermal and electronic properties for two directions of thermal wave propagation in the GaSe single crystal was investigated using photoacoustic (PA) frequency transmission techniques. First, the electric field of an incident polarized light beam was adjusted to be perpendicular to the c-axis (E→ ⊥c) and then parallel to it (E→ ∥ c). An obvious difference in the PA phase and amplitude spectra of the same sample for these two cases was shown. The thermal diffusivity D T obtained by the fitting procedure for these two orientations of the electric field were calculated as D T∥ =0.46×10 -5 m 2 /s and D T⊥ =0.62×10 -6 m 2 /s eg. Their ratio is about 7.4. The electronic transport parameters are also given. The carrier diffusion coefficient D∥ is 0.53×10 -3 m 2 /s and D⊥ is 0.3×10 -3 m 2 /s.
Publisher: edp Sciences

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