. . "Reshak, Ali Hussain" . "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."@en . . "http://www.worldscientific.com/doi/abs/10.1142/S0217984913500619" . . "P(ED2.1.00/01.0024)" . . "10.1142/S0217984913500619" . "Modern Physics Letters B" . "Reshak, Ali Hussain" . "RIV/60076658:12520/13:43885172" . . "9" . . . "9"^^ . "104944" . . . "SHIFT OF BAND GAP FROM DIRECT TO INDIRECT AND OPTICAL RESPONSE OF LiF UNDER PRESSURE" . . . "Sajid, A." . "SHIFT OF BAND GAP FROM DIRECT TO INDIRECT AND OPTICAL RESPONSE OF LiF UNDER PRESSURE" . "12520" . "1"^^ . "27" . "Murtaza, G." . "000316904500006" . "SHIFT OF BAND GAP FROM DIRECT TO INDIRECT AND OPTICAL RESPONSE OF LiF UNDER PRESSURE"@en . . . "optical properties; band structure; hydrostatic pressure; DFT; Lithium fluoride"@en . . "0217-9849" . "[EB07B36C3D1F]" . "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." . "RIV/60076658:12520/13:43885172!RIV14-MSM-12520___" . "SHIFT OF BAND GAP FROM DIRECT TO INDIRECT AND OPTICAL RESPONSE OF LiF UNDER PRESSURE"@en . . "3"^^ . . "SG - Singapursk\u00E1 republika" .