| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
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 SM ISO690:2012GUK, Maxim, LITVINCHUK, A., LEVCENKO, Sergiu, IZQUIERDO-ROCA, Víctor, FONTANE, Xavier, VALAKH, M., ARUSHANOV, Ernest, PEREZ-RODRIGUEZ, Alejandro. Optical phonons in the wurtzstannite Cu2 ZnGeS4 semiconductor: Polarized Raman spectroscopy and first-principle calculations. In: Physical Review B - Condensed Matter and Materials Physics, 2014, vol. 89, p. 0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.89.205205 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Physical Review B - Condensed Matter and Materials Physics |
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| Volumul 89 / 2014 / ISSN 1098-0121 /ISSNe 1550-235X | |
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| DOI:https://doi.org/10.1103/PhysRevB.89.205205 | |
| Pag. 0-0 | |
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The vibrational properties of the wurtzstannite Cu2ZnGeS4 are studied experimentally by polarized Raman scattering in off-resonant and resonant conditions and theoretically by ab initio lattice dynamics calculations. Twenty-nine modes from 45 Raman active theoretically predicted have been experimentally detected and identified, including polar A1(TO), A1(LO), and B1(TO+LO)/B2(TO+LO) and nonpolar A2 symmetry phonon modes from measurements on (2 1 0) and (0 0 1) crystallographic planes of Cu2ZnGeS4 single crystals. The lattice dynamics calculations provide a full picture of the zone center phonon spectrum and allow the assignment of experimentally observed lines to first- and second-order lattice vibrations. Using resonance Raman conditions, a strong enhancement of the A1(LO) modes with the highest longitudinal-transversal spiting is observed. |
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| Cuvinte-cheie thin films, kesterite, Copper Zinc Tin Sulfide |
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