Bansal, M. L. ; Ingale, Alka ; Roy, A. P. (1991) Anomalous mode in the Raman and ir spectra of mercury telluride Physical Review B: Condensed Matter and Materials Physics, 43 (9). pp. 7020-7026. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v43/i9/p7020_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.43.7020
Abstract
We discuss the origin of the low-frequency mode occurring at ~108 cm-1 (at 77 K) in HgTe and Hg-rich Hg1-xCdxTe. Through temperature- and wavelength-dependent Raman spectra and their analysis, we show that this feature is a combination phonon and acquires significant Raman (ir) activity as a consequence of a Fermi resonance with the TO phonon. Within this framework we are able to explain its TO-phonon-like behavior, and the variation of its frequency, width, and intensity with temperature.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 56490 |
| Deposited On: | 24 Aug 2011 11:24 |
| Last Modified: | 24 Aug 2011 11:24 |
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