Temperature dependent thermal conductivity of IIa diamond by laser excited Raman spectroscopy
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-05-10 |
| Journal | Applied Physics Letters |
| Authors | Zhijian Guo, Liang Wang, Kaiyue Wang, Chunhui Ren, Ruiang Guo |
| Institutions | Taiyuan University of Science and Technology, Xiāan Jiaotong University |
| Citations | 10 |
Abstract
Section titled āAbstractāThe thermal conductivity of IIa diamond from low temperature (80 K) to room temperature was studied by laser-excited Raman spectroscopy. The laser has two complementary effects, one performing the Raman spectrum and the other resulting in the local heating on the surface of diamond. With the increase in measurement temperature on the surface of IIa diamond, the Raman peak shifts to the low energy side together with intensity quenching due to the strong electron-phonon coupling and lattice expansion, and the thermal conductivity of IIa diamond decreases as Tā1, which is attributed to the creation and the annihilation of phonons.