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Local phonon mode in thermoelectric Bi 2 Te 2 Se from charge neutral antisites
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tian, Yao Osterhoudt, Gavin B. Jia, Shuang Cava, Robert Joseph Burch, Kenneth S. |
| Copyright Year | 2016 |
| Abstract | Local modes caused by defects play a significant role in the thermal transport properties of thermoelectrics. Of particular interest are charge-neutral defects that suppress thermal conductivity, without significantly reducing electrical transport. Here, we report a temperature dependent Raman study that identifies such a mode in a standard thermoelectric material, Bi2Te2Se. One of the modes observed, whose origin has been debated for decades, was shown most likely to be an antisite defect induced local mode. The anomalous temperature independent broadening of the local mode is ascribed to the random arrangement of Se atoms. The temperature renormalization of all modes is well explained by an anharmonic model–Klemens’s model. VC 2016 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4941022] |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://capricorn.bc.edu/lins/wp-content/uploads/2016/01/1.4941022.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Adaptive Internet Protocol PDF/A Phonon Raman scattering Software bug Status Epilepticus Tellurium Ventricular Septal Defects large latent transforming growth factor-beta complex |
| Content Type | Text |
| Resource Type | Article |
