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    Shift of band gap from direct to indirect and optical response of lif under pressure

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    Shift of band gap from direct to indirect and optical response of lif under pressure-abstract.pdf (57.02Kb)
    Date
    2013-04
    Author
    Sajid, A.
    Murtaza, Ghulam
    Ali Hussain, Reshak, Prof.Dr.
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    Abstract
    We hereby are reporting the transition pressure at which lithium fluoride (LiF) compound transforms from direct band gap to indirect band gap insulator on the basis of FP-LAPW calculations. The fundamental band gap of LiF compound suffers direct to indirect transition at a pressure of 70 GPa. The study of the pressure effect on the optical properties e.g. dielectric function, reflectivity, refractive index and optical conductivity of LiF in the pressure between 0-100 GPa, shows that this pressure range is very critical for LiF compound as there are significant changes in the optical properties of this compound.
    URI
    http://www.worldscientific.com/doi/abs/10.1142/S0217984913500619?queryID=3%2F20471
    http://dspace.unimap.edu.my:80/dspace/handle/123456789/35712
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