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Low temperature Raman study on the site symmetry of ZnSe:P |
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| Authors: | A.K. Balasubramanian T.R. Ravindran K. Ramachandran |
| Affiliation: | a Department of Physics, Sourashtra College, Madurai-625 004, India b Material Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India c School of Physics, Madurai Kamaraj University, Madurai-625 021, India |
| Abstract: | Raman spectra of phosphorous doped ZnSe are recorded from 9 to 300 K. In addition to TO mode at 208 cm−1 and LO mode at 253 cm−1, a new mode around 240 cm−1 is observed between 55 and 270 K. The spectra at lower and higher temperatures do not show the new mode. This new mode confirms that there is a reduction of (Se site) symmetry from Td to C3v when P substitutes for Se. This is due to Jahn Teller distortion. |
| Keywords: | 81.10.Bk 78.30.-j 81.05.Dz |
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