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- W4232406761 abstract "The first-order Raman spectra of $3C$-SiC have been measured as a function of hydrostatic pressure up to 22.5 GPa in a diamond anvil cell. The mode-Gruneisen parameters of the LO and TO phonons at $ensuremath{Gamma}$ were determined. We observed an increase of the LO-TO splitting with pressure from which an increase of the transverse effective charge upon compression results. We discuss this behavior of the transverse effective charge under lattice compression in terms of a microscopic pseudopotential calculation and of the bond-orbital model. Calculations of effective charges for other hypothetical IV-IV semiconductors are presented." @default.
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- W4232406761 date "1982-03-15" @default.
- W4232406761 modified "2023-10-16" @default.
- W4232406761 title "Pressure dependence of the optical phonons and transverse effective charge in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mn>3</mml:mn><mml:mi>C</mml:mi></mml:math>-SiC" @default.
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- W4232406761 doi "https://doi.org/10.1103/physrevb.25.3878" @default.
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