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Anisotropy of the optical absorption in layered single crystals of MoRe 0.001 Se 1.999
Author(s) -
Vora Mihir M.,
Vora Aditya M.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200610769
Subject(s) - anisotropy , absorption (acoustics) , optical anisotropy , phonon , intercalation (chemistry) , crystal (programming language) , single crystal , crystallography , chemistry , band gap , condensed matter physics , chemical physics , materials science , optics , molecular physics , optoelectronics , physics , inorganic chemistry , computer science , programming language
Energy gap of MoRe 0.001 Se 1.999 single crystal has been determined by fundamental absorption methods. The incident light was polarized along c‐axis of the crystals. The interpretion of the data is given within frameworks of two and three dimensional models. Both direct and indirect transitions are involved in the absorption process. The indirect transition was found to be allowed with two phonons participating in the process. The three dimensional model could be used to describe the optical properties of the single crystal. The energy gaps depend upon the amount of the intercalating Re material, which show the anisotropy of the chemical bonds. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)