標題: | Preliminary studies of the Raman spectra of Ag2Te and Ag5Te3 |
作者: | Milenov, T. I. Tenev, T. Miloushev, I. Avdeev, G. V. Luo, C. W. Chou, W. C. 電子物理學系 Department of Electrophysics |
關鍵字: | Semiconductors;Single crystals;Thin films;Raman spectroscopy |
公開日期: | 1-四月-2014 |
摘要: | The theoretical calculations indicated that the monoclinic low-temperature phase of silver telluride is a new binary topological insulator with highly anisotropic single Dirac cone surface. We obtained crystal ingots containing few grains by the Bridgman method. We also deposited thin films of tellurium, by thermal evaporation method. The Raman spectra of , tellurium and were measured at three excitation wave lengths: 633, 515 and 488 nm. The Raman active modes of , tellurium and are situated at frequencies below 300 while vibrations of other phases appear at higher frequencies. |
URI: | http://dx.doi.org/10.1007/s11082-013-9810-1 http://hdl.handle.net/11536/23969 |
ISSN: | 0306-8919 |
DOI: | 10.1007/s11082-013-9810-1 |
期刊: | OPTICAL AND QUANTUM ELECTRONICS |
Volume: | 46 |
Issue: | 4 |
起始頁: | 573 |
結束頁: | 580 |
顯示於類別: | 期刊論文 |