Spectroscopic ellipsometric studies of the dielectric function of Cd 1− x − y  Mn  x  Fe  y  Te single crystals | Zendy

Hwang Younghun | Zendy; Kim Hyekyeong | Zendy; Um Youngho | Zendy; Park Hyoyeol | Zendy

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Spectroscopic ellipsometric studies of the dielectric function of Cd 1− x − y Mn x Fe y Te single crystals

Author(s) -

Hwang Younghun,

Kim Hyekyeong,

Um Youngho,

Park Hyoyeol

Publication year - 2004

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200304648

Subject(s) - valence (chemistry) , photon energy , dielectric function , analytical chemistry (journal) , dielectric , spectral line , ellipsometry , chemistry , atmospheric temperature range , materials science , crystallography , optics , photon , thin film , physics , thermodynamics , nanotechnology , optoelectronics , organic chemistry , chromatography , astronomy

Cd 1− x − y Mn x Fe y Te single crystals grown by the vertical Bridgman method have been studied by measuring the complex dielectric function using spectroscopic ellipsometry in the 1.5 ∼ 5.5 eV photon energy range at room temperature. The CP energy parameters of the E 0 , E 1 , E 1 + Δ 1 , and E 2 structures were determined by fitting the second‐derivative spectra ( d 2 ε /d ω 2 ) with a theoretical model, i.e., the standard critical point (SCP) line shapes. The E 1 , E 1 + Δ 1 , and E 2 energies decreased with increasing Fe composition y , which is due to the hybridization effect of the valence and conduction bands in Cd 1− x Mn x Te with Fe 3 d levels. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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