Layered character of dielectric function in TlGaSe2 at phase transition from exciton spectroscopy

It is shown that within the temperature region corresponding to paraphasia--ferroelectric phase transition dielectric constant of layered crystals TlGaSe2 and TlInS2 can be considered as consisting of two slabs with different dielectric constants 1, 2 and thickness d1 and d2 (d1+d2=c, c is the latti...

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Veröffentlicht in:	The Journal of physics and chemistry of solids 2003-09, Vol.64 (9-10), p.1707-1711
1. Verfasser:	ALEKPEROV, O. Z
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Ferroelectricity and antiferroelectricity Permittivity (dielectric function) Phase transitions and curie point Physics Polarization and depolarization
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