Статья

Raman scattering study of zinc blende and wurtzite ZnS

Yingchun ChengNanjing University 1 Department of Physics and National Laboratory of Solid State Microstructures, , Nanjing 210093, ChinaChangqing JinNanjing University 1 Department of Physics and National Laboratory of Solid State Microstructures, , Nanjing 210093, ChinaFei GaoNanjing University 1 Department of Physics and National Laboratory of Solid State Microstructures, , Nanjing 210093, ChinaX. L. WuCity University of Hong Kong 2 Department of Physics and Materials Science, , Kowloon, Hong Kong, ChinaWei ZhongNanjing University 1 Department of Physics and National Laboratory of Solid State Microstructures, , Nanjing 210093, ChinaShuhua LiNanjing University 3 Department of Chemistry, Institute of Theoretical and Computational Chemistry, Laboratory of Mesoscopic Chemistry, , Nanjing 210093, ChinaPaul K. ChuCity University of Hong Kong 2 Department of Physics and Materials Science, , Kowloon, Hong Kong, China

2009en

ABI

Аннотация

We have conducted an experimental and theoretical study on first- and second-order Raman scattering of zinc blende and wurtzite ZnS. Based on the calculated phonon band structure, phonon density of states, and symmetry selection rules, we have clearly identified for the first time the origins of these vibration modes in the second-order Raman spectra from these two polymorphs. For zinc blende ZnS, it is found that the previously estimated frequency of the LA mode at X point in the Brillouin-zone boundary is much smaller than the value obtained from other experiments and our calculation. Considering the involvement of LA phonon at X point, we reassign the second-order Raman active modes and some other modes which have not yet been understood so far. This work clarifies some of the controversial Raman mode assignments in zinc blende and wurtzite ZnS.

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Идентификаторы

DOI: 10.1063/1.3270401

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar