Creator | Title | Description | Subject | Date | ||
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1 |
![]() | Vardeny, Zeev Valentine | Disorder-induced TA Raman lines in mixed Cu-halide crystals | The Raman spectra of CuClxBr1=x and CuBrxI1=x solid solutions are shown to contain extremely intense disorder-induced first-order TA phonons. The intensity of these lines is a function of the concentration x, and is highest in CuCl0.6oBr0.40. The TA spectrum, well resolved at low temperature, fits... | Cuprous halides; CuBr; CuCl; CuI; mixed Cu-halide crystals | 1979-03 |
2 |
![]() | Vardeny, Zeev Valentine | Lattice dynamics of CuCl | A satisfactory fit for CuCl phonon dispersion relations is obtained for the first time. This fit is achieved by modifying the branch assignment of a few 2 phonons and by applying a double-shell model to fit the observed phonon data. | CuCl; Phonon dispersion relations | 1975-06 |
3 |
![]() | Vardeny, Zeev Valentine | Phonon-polaritons in Cu halides: anomalies and their temperature dependence | The polariton Raman spectra of CuCl, CuBr, and Cul crystals are studied at various temperatures of their zinc-blende phase. Two polar modes are proven to exist in CuCl at room temperature and below; their oscillator-strength ratio changes with temperature and follows the temperature dependence of ... | Cuprous halides; CuBr; CuCl; CuI; Phonon anomalies; Temperature dependence; Zinc blende phase | 1980-03 |
4 |
![]() | Vardeny, Zeev Valentine | Specific heats and lattice dynamics of cuprous halides | The specific heats Cp(T) of CuCl, CuBr, and Cul were measured by the adiabatic calorimetric technique. The corresponding Debye temperature for each crystal is given and a comparison between the results is drawn. The room-temperature phonon dispersion relations for these cystals are fitted by a nine... | Cuprous halides; CuBr; CuCl; CuI | 1978-10 |